Re: why is my computer doing this!!
Well it deffinately sounds like a CPU problem to me personally. The rest of your system is good and I am assuming that you motherboard is LGA 775 based on the other parts your running. So I would say a CPU upgrade might be a worthwhile thing to look into.
The weird loading box issue in Crysis doesn't make sense, but when I think about it, it could be because the game was not designed for Pentium 4 Procs.
Also, do what our friend here said and reset proc to stock clocks.
So I would say it is likely a CPU problem worth of an upgrade. What is your budget for a new CPU?
XPEX Vortex 3620 Mid Tower, Rosewill 450 Watt PSU, MSI P6N SLI Platinum 650i, Intel Celeron D 356, 2GB G.SKILL DDR2 800, Western Digital 40GB, (2) EVGA 7950GT 256MB Video Cards in SLI, HP DVD Multi-Burner, Windows XP.