|"my monitor has a black screen with a cursor blinking on the left side."|
sorry but wrong conclusion. What is describe above is a missing master boot record. Most likely caused by a virus or a severe crash/corrupted file system.
You would pull out your xp cd and get into recovery console then run the utilities fixmbr and fixboot. Doing so nomally fixes this issue.
Google xp recovery console for the how to. If you didn't get a cd with the system perhaps you can borrow a xp cd of the same [-pro or home] and use it.
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