Two Hard Drives not working

My computer has had all kinds of trouble and many problems that I have posted for, but it seems as a new problem keeps springing up every day. My video card had been causing problems for a while (which i realize is too late now) by rebooting my computer. After I learned that, the final problem blew everything away. I formatted my hard drive (Western Digital Special Edition, 80GB) to start anew, but when I installed windows, It came up with a message saying "Failure to Load Operating System." I tried 3 windows Cd's (XP Corp, XP Home, 2k Pro) and still had the same problem. I then popped in an old hard drive (Seagate, 20GB) and tried. This time the message said "disk read error." I tried swapping out the ram, and a new cd drive, but to no avail. I am clueless as to what i can do now.

 

sound like you got bad HDD, the first get Bad MBR
the second get Bad Track 0 or thing like bad sectors
YOu can download Utility softs from both HDD manufactors for fix problem from your HDD or use Ontrack disk.