My old Dell has a major problem. It's owner is a dumbass! It's a 1999 model (XPSt 700r). It has been working fine and I have changed out a lot of the original stuff. But last week I decided to replace the old 10g hard drive with a 160g (old HD was full). I unplugged the unit, removed the old drive, mounted the new one and plugged it all back together. I attempted to boot up with the XP install disk. It acted normal until it asked me to press F8 to begin loading Windows. At that point it said there was no disk detected. I rebooted and got the same results. I set the HD jumpers to master, slave and cable select rebooting each time. Still, nothing. Now, when I try to boot, it just says error loading OS or no OS detected. Does anybody know an easy way to fix this? I'm starting to think about gasoline and matches.