I have an HP 4525S. It will not boot. It has Windows 7 pro installed.
When I press the ON button, I can hear the normal disk drive sound but then no video displays.
I have attached an external monitor, no video on that either.
I have read all the manuals I can find for this unit. There is no troubleshooting information.
How would you troubleshoot this problem?
Thank you for your help.