While attempting to download Windows xp service pack 3,my screen went black. I left it for about 5 minutes thinking it was rebooting. When it didn’t, I pressed the power button. Now it is in an endless loop where I see the XP loading screen,but then I get a blue screen with the words “autochk program not found – skipping autocheck”. I can’t run anything on the computer except for set-up. My computer is partitioned though,so i installed home-edition(messed up drive is pro). Home edition works fine,but I can’t access the Administrator “My Documents” Folder.It says it is empty,but is taking up a huge amount of space and can’t be deleted. I have read other question with similar problems,but I can’t use the advice because I can’t figure out how to back up these important files.