[quasta123]

HII , friends , i had recently purchased a computer wit the following configuration
AMD 790GX - gigabyte
phenom x4 - 9950 black edition
ati raedon HD4870
4 gb ram
corsair 750watt power supply
500GB segate
cooler master 590
, though this rig is for gaming .........even in 1024x768 resolution crysis gets stuck , and im experiencing the same problem in many games .....and my usb port sometimes works and sometimes it dosent ! the os never loads on the first try ...first the comp starts then the boot screen then just ends at a black screen , then when i restart again OS loads ! ! ! , im facing a lot of problems guys ! ! i need your help ! ! i would seriously appreciate your help ! !

and i also forgot to mention im presently using windows vista ultimate , and i also have XP professional , which has stoppd working altogether !