Okay! I installed a hard drive from an older computer into my newer one. The small hitch is that I forgot to format the Hard Drive. Now, the old one works but the new one freezes when it comes to the agp driver. I can't get into the PC to remove the AGP Driver and the Boot Disk Freezes. The XP boot disk will run on the old HDD but it had Windows ME and when it runs the OS, it says that either there is no os on the hard drive *even though it will boot in safe mode every now and then* or some other error message that I can not remember. I need DIRE assistance if anyone might be able to figure that out. Thanks in advance.