January 25, 2011

Windows XP Boots, Shows Logon Screen, and Reboots Continuously


Three weeks ago my computer crashed. This problem was similar to what happened to my PC six months ago. Back then I was able to fix it by wiggling the hard drive socket—but doing the same fix this time didn’t work out. In fact when I turned on the PC, it booted, showed the logon screen, and when I clicked a program it crashed and rebooted. And this process just repeated over and over—sometimes the logon screen would appear momentarily and the PC would reboot itself.

I can’t pin down the usual suspects—malwares, spywares, and viruses—since I can’t open any program let alone my anti-virus program avast! I tried to repair Windows XP which went on successfully and I was able to open my browser but not for long; the symptoms came back even when running XP in Safe Mode.

Desperate for a solution, I searched in the Internet (from a different PC of course) and found the pages from Microsoft and Ask Leo! very helpful.

I reseated the memory modules and other wire connectors inside the computer case to make sure a loose connection is not causing the problem. Indeed it is not—when I turned on the computer, it refused to start and keeps on rebooting.

With a suggestion from a technician, I installed a video card (my PC uses the built-in video adapter in the motherboard). With a new video card, my PC is now working fine.