I recently upgraded my pc with new PSU (Corsair GS 600), CPU (I5 3570), motherboard (Gigabyte B75),ram (8gb ddr3) and SSD. I used my existing gpu which is GeForce 9800 and old hdds. My system runs just fine for hours when I am doing any normal computing. However when I am doing any cpu/gpu intensive thing like gaming, after few minutes my screens gets corrupted. I.e sometime the screen gets very grainy, at other times it gets corrupted completely with random static image on screen.
This is the screenshot of one such instance.
In the first case I can restart my system gracefully from start menu, in the second case I cannot even use ctr-alt-del. There is no other way but to reboot it via reset button.
Since there are a lot of changes that I have made to my system configuration I am unable to judge what could be the problem point. However I believe that its not a GPU issue, as it was running just fine on my previous hardware. How to converge to the faulty hardware ? Any help would be greatly appreciated.