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Flashing Screen / Unable to Logon

This is a discussion on Flashing Screen / Unable to Logon within the Windows XP Support forums, part of the Tech Support Forum category. Hey guys, Here is an interesting situation I have. The other day my computer started running really sluggish. I decided


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Old 08-03-2008, 02:07 PM   #1
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Hey guys,

Here is an interesting situation I have. The other day my computer started running really sluggish. I decided to restart and when I did I noticed I couldn't log on to the machine. The Windows Login screen comes up but the curson doesn't come up to put a password in. Ultimately I'm stuck here. The screen at this point begins to flash. I started taking things apart and noticed I did have a bad fan. I swapped that out and still nothing worked. I have another PC so I decided to put my hard drive into that machine and luckily I was able to get onto it and pull off crucial data that I need.

At this point I'm thinking graphics card is messed up. However I put the hard drive into the PC that originally crashed. I was able to log on to the machine however the screen did blink every now and again. It wasn't as consistent as the "bad drive". After I was able to log on I shut that "bad machine" down again and put the suspect "bad drive in again. Still I'm unable to log in and the screen keeps flashing. It'll go black for a second come back up and be fine then flash again.

Right now I'm thinking...could be a bad video card however I don't understand why I cannot log on to the machine. Any suggestions?
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Old 08-03-2008, 02:25 PM   #2
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Have you tried booting into safe mode yet?

Which fan had died?
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