I have laptop Sony VAIO with intel core i3 and nvidia geforce with cuda (well, had).
Few months ago nvidia disappeared completely, windows aero is not working (that's how I noticed something is wrong) and sleep mode is not available (when I close my laptop it turns black but it's still running - doesn't log me out or anything). I tried antiwiruses (I have avast and tried anti malware), I googled it many times and found some explanations and advises like running performance test (which didn't work btw, it says test can't be done due to... many reasons, nothing in particular) or clearing more space (I deleted around 100GB, right now I have 200GB of free space). I was worried it's some kind of weird virus since my mom was using my laptop and she is usually visiting not safe websites, but I can't see any harm besides lack those three things. It's not running slow or anything, nothing disappeared, etc. I really tried looking for an answer and I hope somebody here will help me. I really appreciate any feedback!
Edited by joannasza, 01 January 2014 - 04:44 PM.