PC black screen and little else on startup

Model: HP Pavilion p6310y

Product code: AY747AA-ABA

Running Windows 7 home



Just happened yesterday after normal operations. Turn PC on, can here a beep or 2 and fans run. Momentary "no sync" on monitor. No keyboard lights on. Changed monitors and existing works elsewhere; secondary monitor no-go on "bad" PC; all cables secure. Tried a few more times and now the "no sync" doesn't show up. Also, in the past 2 weeks or so, I had encountered random blue screens where I was able to restart.



Any help appreciated.

 

If the fans are turning on but absolutely nothing is appearing on the monitor, I would unplug the PC, remove the CMOS (button) battery on the motherboard, wait about 15 minutes before reinstalling it then try to restart the PC.

If this doesn't work, listen to the number and length of the beeps. This is the board giving you what amounts to diagnostics in a Morse Code style. You can Google the "HP Pavillion beeps" and it may give you a list of what the codes mean.

If all this fails, I'm leaning toward a problem with the motherboard. I've seen a lot of more recent (3-5 year old) AMD-based units from HP and Acer where the board goes bad. In this case, you have a few options: Send the board off for repair (iffy, as the repairs typically last about 90 days), order a new (not refurbished) board from HP (pricey) or salvage what you can and rebuild or replace the PC.

 

Well, I tried to take out/replace the battery. Nothing changed. can't do the F8 as my keyboard is not recognized. Still get the 2 beeps on startup. Happened to open/close the CD tray and heard the 2 beeps when closing. Unplugged the cables to the CD player, and no beeps on startup, but still no display/keyboard.... oh well... :-(