Bluetooth Mouse Losing Connection No More!
I have a Microsoft Bluetooth Notebook Mouse 5000 that I bought when I bought my new Thinkpad with built-in Bluetooth. At the time I was running 64-bit Vista and all was well. Then I upgraded to 64-bit Windows 7, and suddenly the mouse started constantly losing connection.
There was no detectable pattern. It would work fine for a while, and then start disconnecting all the time for no apparently reason. Sometimes it would not wake up after sleeping, but sometimes it would quit while I was using it. At first I got it going again by removing the mouse from the list of Bluetooth devices and then adding it back in. That took too much time. Then, by accident, I discovered that I could wake it up by opening my Bluetooth settings and toggling the checkbox “Allow Bluetooth devices to find this computer”. If it was off I’d turn it on, if it was on I’d turn it off. That was faster, but still a pain.
I searched the internet and found many similar complaints, but no solutions. Several sites suggested upgrading your Bluetooth drivers. There’s no new driver for the Microsoft mouse, but I updated the Thinkpad Bluetooth drivers. No joy. Then the other day the mouse started quitting on me every few minutes and in desperation I searched again. This time I found the answer. There are two separate settings that need to be changed.
Bluetooth Support Service Setting
Part 1 of the solution is buried in this Microsoft Knowledgebase article:
Connect a Bluetooth device that does not have or require a transceiver
And I quote:
How to make sure that the Bluetooth service is started
- Open the Microsoft Management Console (MMC) snap-in for Services. To do this, follow these steps.
Windows Vista or Windows 7
- Click Start
, copy and then paste (or type) the following command in the Start Search box, and then press ENTER: services.msc
- In the Programs list, click Services.
If you are prompted for an administrator password or for confirmation, type the password, or click Continue.Windows XP
- Click Start, and then click Run.
- Copy and then paste (or type) the following command in the Open box, and then press ENTER: services.msc
- Double-click the Bluetooth Support service.
- If the Bluetooth Support service is stopped, click Start.
- On the Startup type list, click Automatic.
- Click the Log On tab.
- Click Local System account.
- Click OK.
- If you prompted to restart the computer, click Yes.
My log on settings were okay, but my Startup Type was set to “Manual” rather than “Automatic”. I changed it, like so:

Bluetooth Power Management Setting
But sadly, my problem wasn’t solved. So then I tried something else. I opened up Device Manager, expanded “Bluetooth Radios”, and double-clicked on the device to open its Properties page – not the enumerator, the device.

Double click the device (highlighted), not the enumerator
Go to the Power Management page and clear the checkbox “Allow the computer to turn off this device to save power”. And finally, relief! No more disconnects. Apparently there is a bug in the power management of the Bluetooth driver under Windows 7.

Uncheck 'Allow the computer to turn off this device to save power'
I can’t say for sure that the first step of making the Bluetooth Support Service automatic is necessary, or just turning off power management would fix it. It doesn’t hurt to change it to automatic so I didn’t test this. If you test it, post your results. Are both changes needed, or do you just need to turn off power management to stop losing connection?







JLPicard:
Hi and thanks for the tip!!
February 12, 2010, 10:00 amI also have a bluetooth mouse (It isn’t a branded one, it’s chinese….) and I had the same issue.
Actually it works even disabling only the power management setting in bluetooth device properties (I’m running Windows 7 over a Macbook with Boot Camp 3.1 drivers).
Thanks a lot !!!
Sheryl Canter:
Thanks for the feedback. I suspected it was just a power management problem. I’ve noticed that the mouse still goes to sleep after a period of no use, though I turned this off in the Bluetooth settings. That means something else is implementing power management in the mouse. I suspect the two masters were conflicting with each other, and that’s what caused the problem. I don’t know where the other controller is, though. I didn’t see anything in the mouse settings. Maybe it’s in the mouse hardware itself?
February 12, 2010, 10:41 amDavid Temple:
I am having the same issue on a Thinkpad x200s, but with Windows XP Service Pack 3. On XP, I don’t find a Power Management tab on the bluetooth device properties. Is there somewhere else I should look for a similar power setting?
March 4, 2010, 12:41 pmDirtHerder:
I have the same issue as David Temple. I do not seem to have this Power Management Tab. Though I do have these issues with my bluetooth mouse. I also would appreciate being pointed in the right direction. Thanks.
March 7, 2010, 10:35 amSheryl Canter:
If you don’t have the power management tab, I don’t know what to tell you. I’m not running XP.
March 8, 2010, 11:47 amDirtHerder:
I’m actually running Windows 7
March 8, 2010, 11:44 pmSheryl Canter:
If you’re running Windows 7 on a Thinkpad (exactly what I’m running) and you don’t see the Power Management tab, then update your Thinkpad Bluetooth drivers. That’s what I did. There’s a built-in utility on the Thinkpad that searches for new drivers.
March 9, 2010, 7:48 amJohn Ferguson:
When my Bluetooth goes capute, there is no reference to BT in Device Mgr
April 12, 2010, 8:51 amELloyd:
I had disconnection issues too and did everything that Sheryl advised above. Still no luck, in fact within 15 seconds of the mouse being installed, it uninstalled itself. The solution turned out to be very simple thanks to a very smart techno friend …… I was using rechargeable batteries in the mouse and they are only 1.2v; a bluetooth mouse requires 1.5v to drive it.
July 8, 2010, 6:17 pmAh, if only all problems were so simple!
Jay:
This worked! I did have to remove my mouse and then reconect it before it started working again.
July 11, 2010, 2:06 pmgamma:
Hi Sheryl,
Thank you so much for your help – it worked for me! I was just about to return the mouse to the store when I found your article. I’m running Windows 7 Home Premium 64bit on Acer 1810T.
Once I made the service auto-start mouse started working without loosing connectivity. Prior to that, it would work fine, but go to sleep after just 1 min of inactivity. It would reconnect automatically, but only after couple of seconds of moving it around. It was unusable.
Making the service auto-start, made the other option available for unchecking – “Allow the computer to turn off this device to save power”. Prior to that it was disabled. Go figure.
Option “Allow Bluetooth devices to find this computer” is left unchecked on my machine. Hope this helps.
This mouse is almost perfect for my notebook, except for a noisy scroll wheel – especially when scrolling up. Is that something all of you guys experience or I got a lemon?
Now, does anyone know how to configure thumb button to be something else other than back. I usually set it Ctrl-F4 on my other mice. This mouse is not configurable through IntelliPoint 7.1 – it’s not even listed there so there’s no way to do it. I tried a lot of stuff to no avail. I’m looking for some registry entry. I know that are 3rd party software packages, but would like to solve this cleanly. Thanks in advance.
July 22, 2010, 2:10 amAndy Kim:
I had the same problem. I applied this solution so I will find out if this really fixes the problem but it seems promising so far. thank you!
September 1, 2010, 11:23 amSimon Norton:
I also had this problem, after applying these changes, I still had the issue. The device would install, and then almost immediately disappear from the devices window. I also noticed the pairing-mode LED never stopped flashing on my mouse (Sony VGP-BMS10).
I ended up uninstalling the bluetooth device from the device manager and letting it reinstall itself after a reboot. It took 20 minutes to go through windows update for all of the services, but the issue is fixed now!
September 3, 2010, 12:09 amTerrol Williams:
Help! I can’t get it fixed. I went through the MS tech document described above and after I changed my Bluetooth Services Logon to “Local Systems Account” I can’t get it to even see the mouse at all! I changed the power management setting as described and I am more frustrated than I can say.
I am running Windows 7 32 bit and have the same mouse. I also uninstalled and reinstalled the bluetooth device. Is it possible to reset the “Bluetooth Services logon back to what it was before I switched it to Local Systems Account? I think maybe the power management setting might have fixed the problem if only I hadn’t essentially killed all bluetooth devices by changing that setting.
Thanks.
September 16, 2010, 4:09 pmWai Yip Tung:
Thank you. Unchecking the “Allow the computer to turn off the device” works for me. This problem have bugged me for so long.
Also in my case I do it under the “Generic Bluetooth Adapter” instead of the “ThinkPad Bluetooth 2.1″ device. My computer have no such device despite it being a ThinkPad also.
October 18, 2010, 8:22 pmBart:
I have a new Sony Vaio laptop (Windows 7) and Logitech BT mouse, this was happening all the time. Clearing the “Power Management” checkbox as suggested above seems to have solved the problem. Thanks for the helpful tip.
December 3, 2010, 5:01 amSteve:
It worked for me – I’ve been using rechargeable batteries for months with htis problem. Have to shake the mouse and swipe the touchpad to get the mouse to wake up. Now it stays awake nearly all the time. On Vista couldn’t find power settings to keep system from making mouse sleep. But seems to work a lot better. Thaaaaaankssss!!!!
December 3, 2010, 8:27 amSteve
Steve:
And I dragged out my multimeter and checked some standard batteries (not rechargeable) that I thought were dead and found a few that had 1.5v on them still. Thanks again.
It was great to get this dang mouse working (was quite an investment with the NetGear dongle too). I wrestled with BT SW package failing installs for months just to get BT to load the mouse drivers. Then the intermittent connection problem made me put the BT mouse back in a drawer for a few more months. But after reading this, it’s fixed and I’ll be using it everyday.
December 3, 2010, 8:32 amBig problem:
Ehem.

December 29, 2010, 12:53 pmHei and thanks for this information to try to solve all of our problems
I followed the instructions and now my internal Blutooth can’t discover anything. I have been using it before to connect to my phone and other computers so I know how to work it. But when I did all of those things that you say on this website it stopped working
I tried to reverse it with no luck.
My system is Asus 1215n 12.1 inch netbook. Running windows 7 32 bit.
I tried to uninstall the Bluetooth adapter and when I restarted the computer it just installed it automatically again. But it still does not work. I can find my computer on my phone but I can’t connect to it and my phone can find and connect to my mouse so it is the computers fault somehow.
Kay:
I had the same problem as Big Problem. Nothing showed up in “show bluetooth devices” even tho I had several headsets and a phone paired, even the mouse didn’t show up, although it worked. Also, could not pair to anything. Tried to reinstall several things but finally got everything back the way it was by using system restore to back up a month. I always forget about system restore when I have problems!
I just unchecked the “allow the computer to allow this device to sleep” option again to see if the problem reoccurs. So far, so good.
January 17, 2011, 4:38 pmJZ:
So far so good. I’m a bit confused since this hasn’t happend with my plantronis BT headset. Might be some odd combo of the mouse and the controllers.
January 21, 2011, 8:41 amvizzy:
the ibm /lenovo bt lasermouse is trash.
i had this mouse running in linux loosing it connection every 3 minutes or so…. this is bad.
problem also occurs in windows.
other noname bt mices wont disconnect that many. so save your money and dont buy that expensive and heavy bt mouse!
January 24, 2011, 3:43 amTommy:
OK people stop and think your pc cannot find bluetooth devices that are not in DISCOVERY mode. If your device disaapears after doing this re-pair it with the pc.
January 31, 2011, 9:32 amgelangenie:
Totally awesome! Thank you, thank you!
February 3, 2011, 7:20 amCharlene:
Thanks so much for the tip! I just bought my bluetooth mouse yesterday and I was thinking of returning it because I thought it was broken. I had the same problem with the disconnection on Windows 7. Thanks again! Hopefully mine won’t disconnect this time.
February 24, 2011, 8:27 pmArtur:
When I did it, I’ve got a new problem: new devices are not discover anymore.
February 28, 2011, 5:34 amPlease help to solve.
Thanks.
Jacob:
Thanks. That did the trick (ThinkPad W510 Win7-64 and ThinkPad Bluetooth Laser Mouse).
Now if only I could figure out why the cursor jumps around (yes, I turned off the NavPad).
Peace,
Jacob
March 19, 2011, 3:50 pmdavelueders:
There is no Power Management tab in any bluetoothe item under device manager, and now I can no longer see any bluetooth devices after changing the Log On as suggested in the fix description.
Now what do we do ?
March 23, 2011, 12:51 pmSonny:
@davelueders: I got the same prob as you.. lost all the devices and WiFi started to act crazy.. simply go to service.msc like directed in the blog and revert log on tab back to as it was. Thats is “This account” in the text bix enter “Local Service” without the “” and in password Local Service and you’re good to go. I have a CSR usb btooth radio and do not see the power mgmt tab too in dev mgr. I however removed my a4tech btooth mouse and my Nokia e90 phone from the bluetooth devices and then reinstalled the mouse first and then the phone and both are working great so far. Hope this helps!!
April 5, 2011, 2:47 pmSonny:
@Jacob: The cursor might be jumping around because the ouse might not be designed on the surface you are using it on. It might be too dark, too white, or maybe a glass table? Try different sufaces or getting a mouse pad if you are not using one to see where the mouse works best. Hope this helps!
April 5, 2011, 2:50 pmSonny:
@Artur: The bluetooth stops discovering any and all devices by following this method in certain cases despite having all the discovery options on in bluetooth settings. (Happened to me). Solution is to revert the service log in settings to as they were. As I directed to davelueders above. Thanks!
April 5, 2011, 2:54 pmSonny:
TO EVERYONE WHO LOST BTOOTH Devices after following this method:
I’m guessing you all did not have Power Management tab under your bluetooth device in the Device Manager like me and most of you are using an external Bluetooth dongle like me. If you lost all the bluetooth devices and discovery. Just revert the Bluetooth Support service settings to as they were.
1) Press “Windows Logo” on your keyboard and type services.msc.. Press Enter or Return.
2) Find the Bluetooth Support Service in the Services window and double click it
3) Click the Log on tab
4) Click the “This Account” combo button
5) In the empty text box type: Local Service (or press browse and then type local service in the “Enter object name to select” box an press Check name.. if name is correct it will be underlined if not then type carefully again and press ok).
6) In password and confirm pword boxes type Local Service again
7) Apply and OK.
Hope this helps for everyone!!
April 5, 2011, 3:06 pmNANA10:
@Sonny
I have some problem, my CSR Dogle Blutooth can’t discover MS Mouse Wireless Presenter 8000 in Windows 7 again, unfortunately I can’t restore my system back.
How to fix that problem?
Thanks
April 11, 2011, 9:35 pmHinano:
I changed only the power management setting and it worked like a charm for my Microsoft Bluetooth Mobile Keyboard 6000. It doesn’t cut out in the middle of using it like it used to. Fortunately, I haven’t seen it consume batteries any faster so that’s a plus. Thank you for the tip, been looking for a while for it. =)
May 3, 2011, 12:40 pmAlexB:
Thanks a Lot!
It Solved the problem for my Laptop Too!
Dell Vostro 3450
Intel Wireless 1030 802.11b/g/n + Bluetooth v3.0 Combo Card
combo WiFi/Bluetooth adapter from Broadcom
Bluetooth Combo Card
microsoft bluetooth notebook mouse 5000 Combo WiFi disconnecting
Solution:
June 7, 2011, 4:27 pmBluetooth Power Management Setting(In Device Manager)!
GhaV:
IF this worked which I won’t know until later then this is the single greatest thing to happen to me since… Linux. I never had this problem in Ubuntu and I knew it was a Windows issue not my laptop. My HP laptop has built in Bluetooth and this solution makes perfect sense. Windows 7 eats up the battery anyway I don’t know why it would try and “save battery life” by cutting bluetooth. BLUETOOTH IS IMPORTANT to my phone especially. Sometimes I don’t feel like connecting wires. One less worry when I connect my Wiimote at night.
June 13, 2011, 4:39 pmMarcio:
Work fine for me, with my Mouse 5D Wireless (Bluetooth) !!
Funcionou bem pra mim com meu Mouse e uso um modulo interno bluetooth da foxconn no sony vaio
June 18, 2011, 10:20 pmFK:
THANK YOU!
June 28, 2011, 7:55 am.
Eric:
I had exactly the same issues of losing the mouse control.
July 19, 2011, 9:15 amI checked the services which were already were well customized.
The disable of the power management settings solved my problem.
Many thanks for the tip.
WooHoo!!:
Thanks for the info! I too was getting sick of the mouse cutting out and was beginning to think there wasn’t a real solution. But this worked for me and now I can go back to getting my work done!
July 22, 2011, 6:13 pmDmitriy R:
I am glad i found this thread, I was about to return my BT mouse 5000 back to Microsoft. So now I have hope that my mouse isn’t defective and some software checking can make it working good.
July 24, 2011, 12:08 amJim:
i just re-imaged my corporate lappy to upgrade from Vista to Win7. Thank God I bookmarked your article. I made your recommended changes in Vista and had to do the very same thing in Win7. It saved me from launching my BT mouse into orbit from the frustration. THANKS!!!
August 21, 2011, 10:26 pmkoller16:
THANKS A LOT!!!!! I did this and now my Razer Orochi is working perfectly, just in case I did all the changes but I think only changing the power management option it would work, not easy to find a fix to this simple but annoying problem!!! thanks again!!!
August 29, 2011, 6:19 pmMason:
This worked perfectly! Marry me.
August 30, 2011, 12:26 pmBrad:
WOW!!! This solution worked for me on my Microsoft 6000 Mobile Keyboard. (Which, out of gratitude for you, I’m am writing this comment.)
This not only solved the very annoying frequent disconnection problem, but it also cut the wake up lag considerably. It now only takes about 2 seconds to wake up. And now I can type fast and furiously with total confidence that my keyboard is going to keep working instead of disconnecting.
THANKS A MILLION!
September 1, 2011, 2:50 amFink:
Thanks a lot!
I have just bought a new mouse today and got the same problem after a little while. My bt service settings was correct, but not the power management settings.
The strange thing is that I have had my computer for almost 2 years and haven’t had any problems until now. Thought that my bt device was broken
But this solved the problem, thanks!
September 8, 2011, 8:09 amStephen Aberle:
Thank you for the tip! It worked perfectly and has ended a long time frustration for me.
September 9, 2011, 11:55 amLindsay Porter:
Made all the changes you suggested – wonderful because it now works perfectly. what a relief! Many thanks.
September 14, 2011, 2:41 pmRanj:
PROBLEM SOLVED! THANKS TO SONNY!
I followed the instructions, clicked restart service. Done.
I have been trying for days to get my bluetooth mouse working (Belkin comfort Mouse).
It installed, then dissappeared. Couldnt find it when trying to install again.
I read somewhere to do the opposite of what Sonny said. Which did not work.
Anyways, I just want to thank you SONNY! Lifesaver.
September 16, 2011, 7:29 pmNina:
Thank you soooo much!
September 22, 2011, 3:23 pmWhat a relief
Rykel Lim:
I have the same problem as Terrol Williams after changing the “Startup Type” to “Local System Logon” – my system cannot detect the mouse anymore.
I am also now wondering HOW I can reset the setting to its original value??
Thanks!
September 25, 2011, 1:43 pmC Gran:
Thanks for posting this. I’ve been looking for the solution and kind of embarresed I didn’t find it myself.
October 12, 2011, 3:25 pmshah:
Thank you.solve my problem.Simple setting but big impact.
October 21, 2011, 5:57 pmGood job bro.God bless you.
Corey:
Hi Sheryl,
Can’t thank you enough for taking the time to post this solution. Like you, I have been removing my microsoft mobile keyboard 6000 from the bluetooth device list only to add it back in and it was becoming really annoying. So far, using your suggestions for a permanent fix, I haven’t had to do this. Awesome
Thanks again!
October 24, 2011, 10:47 amDave:
I have a Dell Latitude 430 (running XP) that I just got a Dell Travel bluetooth mouse for. The mouse took forever to get established. When I try to “check for devices” the laptop doesn’t find it. I spent a half-hour on the phone with a tech to get it to work. Well, now everytime I close the notebook, it seems to lose the connection with the mouse. I have to click on the blutooth icon in the systray, thankfully the mouse still shows up there. Then it prompts me for the passcode (four zeros) and it reestablishes the connection. Its gettinf real irritating having to plug in a usb mouse to get my BT mouse to work everytime. All the above posts talk about Vista and 7. I cannot find any power management for this mouse in XP. its not in the device manager, its not in the properties for the mouse itself either. I was able to do the whole bluetooth support services and mine was already on automatic, but the second step, Log-On, I had to switch to my local system account. Anybody with XP have any answer to this?
October 30, 2011, 6:43 pmDave:
Oh, I forgot, the mouse did come with a cdrom, but my notebook doesn’t have anyplace to put it!!! What good does it do me if I can’t run it on the notebook?
October 30, 2011, 6:44 pmDave:
Well, I’m not sure how I did it, but I activated something called a Bluetooth Information Exchanger. It is the very last thing to load on start-up / waking from sleep mode, but once the icon pops onto the desktop, the mouse works.
October 31, 2011, 6:55 pmCameron:
Sheryl, as they say here in Australia, you’re a bloody legend – I had just thrown my mouse across the desk in frustration (desperately working on a massive spreadsheet for a customer bid) and decided I had to fix this once and for all. Google popped up your blog and I realised you had exactly the same set up as me (with the exception that my bluetooth mouse is a Lenovo brand). So far it’s been 20 mins with no drop outs – A MILLION THANK YOUs for taking the time to publish this! It’s people like you that make the internet such a fantastic resource. Thanks.
November 7, 2011, 10:48 pmFred:
Sherly:
thanks for your help. Your instructions seem to have helped. Im up and running with my lenovo mouse and lenovo computer and they are not disconnecting like before. The imput from your other posters also helped as I had to make a few adjustments to get things to work.
Fred
November 12, 2011, 10:43 amCary:
I followed the steps and now I can’t get the mouse to work at all!
I have dell latitude e5520 and a microsoft 5000 mouse. The discovery works, and windows says it installs the device, but the light on the mouse never stops flashing from red to green. grrr!
November 16, 2011, 5:55 pmMike:
You rock, this is great. I was so annoyed with the bluetooth disconnection. I’ve posted this on a couple of the Lenovo forums as well so others over there can find it easily too (a lot of the posters had just given up and gotten a wired mouse haha)
Great find, thanks!
November 18, 2011, 7:44 pmBluetooth File Transfer in Windows 7:
If you turn your mouse or trackpad off or turn off the Bluetooth option in your computer, the connection between the computer and the mouse or trackpad will be lost. When you turn on the mouse or trackpad and Bluetooth, you can re-establish this connection by simply clicking the mouse button or trackpad surface.
November 22, 2011, 2:33 amSK:
Hi,
November 23, 2011, 2:39 amI have similar issue with HP Vostro 3400 but this looks working for my bluetooth problem.
My mouse MS5000 either and now it work fine till now.
Thanks for your information.
Dave:
Great tip. I’ve been having problems with the mouse for over a year, many times just restarting Windows to fix the issue.
November 30, 2011, 6:16 amToday, after yet another disconnect, I searched for a solution (as I’d done before to no avail) and found this.
As soon as I disabled the power management, my mouse sprung back to life!
A thousand thanks!
Tim:
Great ! Thank you very much. I’ve searched a lot for the solution. Mine is a new Sony viao with windows 7 and a Vaio Bluetooth mouse. It worked great with my old vaio laptop, but not with this one. I was really disappointed with it until you pointed me in the right direction.
December 4, 2011, 3:00 pmShirish:
Thank you! Thank You!
December 11, 2011, 2:12 amAlex RM:
Hi, I have the problem with Acer IconiaTab W500 and Microsoft Mouse 5000.
I change the BT service from manual to automatic but nothing changed.
I don’t have the power management tab in the device manager item properties.
I searched for a new driver on Acer support site but is the same that was installed, without the power monagement tab!!
Someone can suggest a solution??
Thanks
December 14, 2011, 7:26 amKate:
AH JEEZ!
Thank you Thank you Thank you
!
I’ve got a Razer Orochi Laptop Gaming mouse that I use for work and of course for fun and I love the size and weight and precision of it but I was totally all set to throw it out a window until I found this, so you saved me the cost of my window, and my mouse
December 20, 2011, 8:44 pmMario:
Sheryl,
After replacing my Hard Drive (they don’t last forever) I am finding that my Sony VAIO recovery disk (Windows XP Professional) does not include a BlueTooth file when I run and open the services.msc list. I believe I have downloaded every available update in this regard but clearly I am missing some aspect of files since my Microsoft Bluetooth Notebook Mouse 5000 is not being “discovered” – nor do I know how to find the appropriate software program to aid me in this regard. Any ideas?
Thanks,
December 21, 2011, 10:53 amMario
aspirant:
Thank you for this article, it helped fix the issue I had with my BT mouse.
January 1, 2012, 8:26 amSam:
I also lost mouse connectivity and cannot discover anymore after applying the changes. Sonny’s tips fixed my problem – I changed logon account to “Local Service” and password to “Local Service” (note it’s case sensitive). then restarted all Bluetooth services and it works.
January 9, 2012, 6:55 pmHannu:
Sonny, a huge thank you. How did u come up with the solution? Spent hours installing and hunting new drivers to connect my Nokia phone with bluetooth. Maybe now i can dig my bluetooth laser mouse up again, i abandoned it a while ago since lost patience with this bluetooth problem in Windows 7.
January 10, 2012, 9:44 am