A Dell Latitude D600 running Win XP SP2 is running at an unbelievably slow rate. This all started with a BSOD, 0x000000F4. After removing it from the company network, I was able to boot it up using the Last Known Good Configuration - slow, but bootable. Since then, I've received a net.exe error that hasn't re-appeared. Nonetheless, the Latitude D600 continues to be incredibly slow (2-3 minutes to display start menu, etc). Disconnecting from everything doesn't help; connecting doesn't hurt speed either. I've attempted putting the hard drive in another laptop with the same result. Any ideas?