Bit of a pickle, eh? Ok, you've tried many hardware solutions, but how about software? When was the last time you were able to boot to the desktop? The only hardware-related things that I can think that would cause this that you haven't already tried is the PSU(Power Supply Unit) OR the motherboard. Those each can be hard to repair, upgrade, or replace. I have an idea. Is there any info on the computer that needs to be saved? If there is, do try to back it up. IF YOU CAN'T BACK IT UP, DO NOT CONTINUE. As what we are going to do is format the hard drive and re-install windows. Meaning we delete EVERYTHING and put in Windows. If you don't feel comfortable with that, you could try to boot from Safe Mode, or even LAST KNOWN GOOD CONFIG.

If you have Windows 98 or Windows ME, create or acquire a Windows 98 or ME startup floppy disk. This disk can be created using the Add/Remove Programs feature in the Control Panel. Once you've backed up your data files, turn off your computer, put the startup disk in the disk drive, and then restart your computer. A menu will appear when the computer boots off of the floppy disk: leave it on the option to start up with CD-Rom support (so you can use the CD-Rom drive). Once the computer is finished loading the files on the floppy disk, use the format command to format the hard drive that had Windows on it (usually it's your C drive, so the command is format cHappy.

Once the format is complete, insert your Windows CD in the CD-Rom drive, switch over to your CD-Rom drive (if your CD used to be drive D, it is probably now drive E, so use the command e: to access the CD drive), and run the setup program by typing setup.

Once Windows is reinstalled, you will have to reinstall your other programs individually.


If you have any questions, just ask.
-Ibrahim