Please help me.. os wind xp.. while on computer, all of the sudden screen goes black except small box that says sleep mode and then all black again. The main screen with 'emachines' name comes up and that is it. stuck there.. cant get out of that . and computer does still have power on.. only way to get back into my computer is to connect this travel drive (512mb) into my usb port , that is the only way i can use my computer now.. other wise it will come up but then will go to ' sleep mode' do you know why and how to fix? thanks hope this even makes sense to someone.. ; )