My gtx 680 needs some help, any ideas?

[marsBox]

Yesterday I was able to play The Witcher 2, Borderlands 2, Deus Ex Human Revolution, and Half Life 2 with absolutely no problems. All on the best visual settings these games were running great. Today I turn my pc on and there is slight lag when I play them. (I go to jump and a half a second later I actually jump, etc.).

Any ideas what could have changed? And how to fix my problem.

My System:

Intel i7 2700k running 3.5ghz
16gm ddr3 ram, latency 8-8-8-9
EVGA Nvidia GeForce GTX 680
Samsung 256GiB SSD
Western Digital Caviar Black 1TB HDD
ASRockZ77 Pro4

 

[marsBox]

Also, I have reinstalled/updated all drivers with no success.

 

[DaveSimmons]

Virus, Trojan, other malware
Some other program you installed using too much CPU time (try control-alt-del)
Internet connection problem (might just need to power off router, wait, power on)
Dying hard drive

 

[zaydq]

Sounds like a CPU usage issue moreso than a GPU issue. Run the games and look at your CPU usage. What % is it going at? Is there any processes using up a huge sum of it?

 

[Face2Face]

Change the batteries in your wireless keyboard......?

For serious.. I would check your CPU usage as stated above. Especially at idle while viewing your desktop. If you are seeing 25% usage or more while doing nothing I would think it could be malware/Virus related.