My computer freezes itself randomly HELP!

my computer freezes itself when i start up the windows but sometimes only and when I play games especially Grand Chase
OS: Windows 7 Ultimate 32-bit
Processor: Intel Pentium 4 CPU
Memory : 2048 RAM
Video Card: ATI Radeon 3450

what's the problem with this?! my CPU or other hardware? please I need to know :(

Check you RAM. You can do this with memtest, just google memtest and follow the instructions. It's a image file so you have to burn it on a CD, boot from a USB Device or PXE.

Regards~

Take a look at the technical support section.

#moved

Different things can be. How old is the PC? Temps?