Monitor powers up but stays blank replaced video card orginal one was built in motherboard still nothing. Doesn't sound like computer is booting up, pulled out bois battery for 15 minutes minutes no help.Checked cord for bent pins, checked for loose connections.May of had a power surge the other when this all started what can Icheck next .By the way hello to everyone one this site lot of good information on this site. Also removed ram and put back in.