Games crashing randomly. Requesting help.

So, apparently ever since I cleaned up some viruses using Avast, all the my games begin to crash. It used to crash the whole computer (it still does but only on high graphics) but now it just crashes the game to the desktop. Does any one know what to do with this problem? Thanks!

System Specs(I'm not an administrator so I can't provide the complete list)

Operating system: Windows 7 home premium 64 bit (6.1, build 7600)
Memory: 4gb ram
DirectX version: 11

Sorry for the lack of specs.

Try a clean startup - Troubleshoot Application Conflicts by Performing a Clean Startup
Update your DirectX9.0c in case - https://www.microsoft.com/en-US/down....aspx?id=34429
Re-install Visual C++ Redistributables for both 32 and 64 bit versions 2005-2008-2010-2012-2013

Run cmd as admin:

Code:

sfc /scannow

Thanks for the suggestion! I'll report back once I finish with it.

Alright, I couldn't do any of those programs because I don't have administrator privileges. Any way to bypass the admin without resetting password? Thanks!

If this is not your own PC, you should get in touch with its owner or the person responsible.

Bypassing admin without any tempering would beat the purpose of having such a feature, isn't it?