Computer freezing when holding buttons in games

[GodLes]

Hello, I have problem, my computer is freezing when i'm holding buttons 2 or 3 seconds when playing some games(I have to stop hold that buttons for game to continue).
I just tried guitar hero. And I can't play that game because you must hold buttons little longer. A few moths ago i tried Skyrim, nice game yeah, but every half minute it freezes. I also tried game called Limbo, same problem, i'm holding right key and it freezes so i must release that button to continue game, please someone help me
My computer
AMD Athlon(tm) 64 X2 Dual Core Processor 4800+ @ 2.51 GHz
3,00 GB DDR2
Asus M2N-SLI
ATI Radeon HD 2600 PRO (512 MB)
Windows XP Pro
I know it's old and stupid computer but i will buy new one, i don't know when but i will,but till then i want to play games like i used to play before on same computer.
I know it's not some virus,it's possible that I screwed something with system but i don't know
And temperature is fine

 

[clutchc]

It could be video driver issues, or many other things. I would first clean the system of resource wasting garbage and registry errors with CCleaner. Do the Clean and Defrag both: http://www.piriform.com/ccleaner Then defrag your HDD.
That alone may solve the problem. If not, it could be a driver issue. Uninstall the graphics driver, boot to Safe Mode (tap F8 at boot) and run Driver Sweeper: http://phyxion.net/item/driver-sweeper.html
Have it remove any Nvidia and AMD/ATI driver remnants it finds. Re-boot and install the latest driver for your card/O.S. http://support.amd.com/us/Pages/AMDSupportHub.aspx