My computer restore option (rstrui.xe) won't work on safe mode. How do I fix this?

My computer hasn't been turning on since September 2009. During December there was a period where it would, but every now and then I would get a notice/warning with the title saying that the wuauclt.exe was corrupt and unreadable. It did it at first on safe mode. I think it may have something to do with the restore option because they are both found on "system 32" But I honestly have no clue. I'd appreciate any advice. (I'm on my family computer and it's extremely slow, not to mention I miss my computer)