I have an HP Pavilion p7-1170t. I shut down normally last night with no signs of problems. When I turned it on today, an orange light flashed and it beeped 5 times and would not start. I opened up the cover and cleaned the fans of dust. Same thing happened. I then removed a memory card and re-inserted the same one, and finally I got the PC to start without the beeps. I now get the Startup Repair screen, and it asks me if I want to restore my computer to the last restore point. I'd love to, but it's not recognizing my keyboard or mouse so I have no way to move forward. I've unplugged everything and re-booted several times and no luck. Please help.