I have Windows Vista and my screen is black with only the mouse visible and a documents window open. I had a blackout and when my computer rebooted, there was no desktop or start. when i click ctrl atl dlt my task manager does not come up, it brings me to my logoff user page? How can I fix this problem? It's been like this for a couple of months now. I've tried setting my computer back to the erliest date, but it didn't work. i'll get an error message, saying there isn't enough memory or something like that. I cant right click on the background. it wont work. what should i do. do i have to bring my computer somewhere to get fixed?