I don't have 2 hard drives, just one 80GB Sata 2.

But could it be a fault in the Hard Drive itself? Cause it was working well with my graphic card until 5 days ago...

I bought a 7300GS at the beginning of the month. It got installed well, and I was able to enjoy some games on it until I could buy a better card. But now, for the past 4 days, my hdd kept failing to load XP, so whenever I try installing the OS again, it takes forever for my DVD/Cd-R combo to open it, and at most times it can't detect the hard drive, or it hang up while copying the files. So in a desparate attempt to fix it, I don't know what came to my mind, but I removed the gfx card, and it was all better!

But what questions me is if it was the graphic card that was the problem, how come it wasn't causing any problems through out the whole month, and all of sudden the PC breaks down and when I remove the card it gets better?

Thats question 1, now here's 2: Which of these cards is better? Both are in my budget with only $20 difference:

HIS HD4850 512MB 256-Bit DDR3

OR

GeForce 8800GT 512MB 256-Bit DDR3

So wait, Crysis isn't a next-gen game because it requires you installing the game on the hdd?

I guess I see now why you think Fable 2 is better.

Fable 2 has horrible textures so far.

No one can ever compare graphics with Crysis, for even the following year.