hit 4 for the pc doctor, then 1 to run the quick test, then keep going on for more diagnostics
something not right with your machine. take the hdd and ram out. then the battery. clear the cmos. turn the machine on twice. it will beep both time, but this will clear up stuff left in memory. put the ram and hdd back in. then try it
start uninstalling stuff in safe mode until it goes away. try the video card first.
it can restore your computer to a time that it worked right. but I think that you said that it never worked right