This didn't happen before when I first got the new hard drive At first, it was working well for a few days. However after some usage and updates, windows XP start to freeze during heavy memory usage task (virus scan, many file copying, mpeg display). The symptoms is when the mouse stopped responding, the system won't respond, and the keyboard only accepts about 2-4 keystrokes before it stops as well (I can tell by pressing the num lock a few times before it won't respond)). This is the exact same condition that plagued my previous hard drive which became my auxiliary hard drive. I decided to format and reinstall windows XP on the new hard drive. The big problem is that when it got to the part where it's copying the installation files to the C: drive, it freezes up the same manner as before. I had tried to format, Fixboot, and FixMBR from the recovery though yielded the same result. Before I didn't have any problem installing Win XP to the new drive. Is there a way to direct fix the freeze problem? Alternatively, how do you do a complete Hard Drive wipe since format didn't seem to delete the boot up sequence (before it went straight to the Win XP installation without prompt). PS: The freeze problem was on my old hard drive for about 6 -8 months now.