Hi there

My son's computer had a copy of xp o/s we now have the original xp o/s. When we realised there was a copy of windows xp, after about 3 yrs you couldn't download anything, you couldn't even disk defrag the computer.
My sons friend took the jumper off and put it back on to make the computer go back to factory settings. Well, since then on the screen this comes up:
"BAD POOL CALLER STOP: 0X000000C2 (0X00000043, 0XC97C8000, 0X00000000, 0X00000000)"
I have tried putting the original in the computer to try to copy over or to try to format the hard drive but the computer would only go so far and then give up.
XP would go through the motions, you would get the "welcome to setup" the the licence agreement then the it would go straight to "press any key to boot from cd...."
Could it be anything to do with the bios settings?????
What does it mean??