nVidia GPU stopped working

Hello everybody. My gpu (NVidia GT 650M) has stopped working for some reason, but I can't seem to rectify the problem. Strangely it stopped when my antivirus software (PC tools anti-virus free) told me I needed to restart the laptop so it could fully remove a threat from my PC. I restarted, and since then the gpu doesn't work. I had a similar problem before, when I updated my BIOS but I was able to rectify the problem by going into device manager and re-enabling the gpu. But this time that solution doesn't work. But everything seems to tell me the gpu should be working normally - the drivers are up to date, and the NVidia control panel lets me select the dedicated NVidia gpu to run programs as normal. I'm quite stumped, I've even tried uninstalling and re-installing the antivirus software, but to no avail.

My specs:

Intel i7 3610QM @ 2.3ghz
Nvidia GT 650M
Windows 7 Home Premium

Sorry for the long post but I thought it best to be thorough. Any help/advice is appreciated.
5 answers Last reply
More about nvidia gpu stopped working
  1. Install direct x drivers again.
    It may be the case a virus attached it`s self to a direct x windows file and the antivirus removed some of the infected files.
    So re installing the direct x drivers may solve the problem.
  2. How do I do that? I've already checked on the NVidia website and my drivers seem to be up to date. Or is there something else I need to do? Sorry, but this is all new to me.


    I tried installing new directx 11 drivers from the Micosoft website, but that doesn't seem to have made any difference.
  3. try using system restore. restore to prior the AV making changes to your system.
  4. In the end had to download and re-install the graphics driver for the GPU from the NVidia website. That's done the trick. What I'd like to know is would my (old) antivirus software delete part of my graphics driver? And why would it do something like that anyway? How do I mark this as solved? Thanks.
  5. lucky for you reinstalling the driver fixed the problem for you. last time my AV screwing up with my gpu driver even older version nor clean driver installation fixed my problem lol.
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