Hello, hope no one minds me popping in here with a possible solution.
Another Advisor named Allen published a post recently on BC and because I thought it was so good I copied and pasted into notepad.
I also have a Nvidia graphics card, it randomly stops responding like yours is doing.
There is an issue with the recent drivers for Nvidia cards and windows 7, the text below will explain how to correct this.
Notice: credit for the text below goes to Allen.
Stickywulf developed this method that you should use each time you update your driver. It also helps you to force Vista / 7 from automatically installing a WHQL basic driver in case you have overclocked your card:
1. Control Panel=>Windows Update=>Change Settings=>"Download updates but let me choose whether to install them".
2. Download the latest driver for your card from the nvidia website.
3. Go to Device Manager, select your display adaptor, and uninstall it, choose to also delete drivers when prompted.
4. Reboot computer into safe mode by pressing f8 when the computer boots, when prompted to install new display driver choose "never install a driver for this device"
5. Navigate to c:\windows\system32\drivers\ and rename the file nvlddmkm.sys to nvlddmkm_old.sys. Take note of the date of this file
6. Navigate to c:\windows\system32 and rename any other file of the same date as nvlddmkm.sys which begins with the letters 'nv'
nvcplui.exe becomes nvcplui_old.exe
nvd3dumx.dll becomes nvd3dumx_old.exe
etc..etc..etc..Repeat for all files with the same date as the file you found in step 5, they begin with the letters 'nv'
If it is too tedious to rename all the files, you can simply move them to a different folder.
6a. For 64bit Vista / 7, repeat step 6 in c:\windows\sysWOW64
7. Reboot to normal Windows, if prompted again to install a driver choose "never install a driver for this device.
8. Install the driver which you downloaded from the nvidia website.
The text above mentions the word overclock
, however the issue is not just related to overclocked CPUs.
That solution has been known to work.
Edited by MrBruce1959, 01 September 2011 - 12:04 PM.