Last night I got home and tried to use my computer and apparently my son got some kind of virus on it. It was some program called Security Shield was popping up acting like it was a program.. anyway, i rebooted to safe mode and was about to do malware bytes, etc that I have installed and we had to leave for my sons baseball game. Got home and now its just a complete black screen with a cursor. I have tried rebooting normal, safe mode, etc and nothing works. Black screen with cursor even in safe mode. I then f8 and choose the option to repair my computer and gives option to fix computer, restore, etc.. i did the fix my computer option and it didnt do anything, still black screen. I then do a system restore and tried restoring it to all 4 different restore point options it gives me and everytime it will not finish the restore and gives me the error 0x800700b7 i cannot find my windows discs or anything. Anyone have any advice/tips on how to get this thing started back up??