Pavilion HP P7 - 1000: screen white when turned on

When the PC is turned on the monitor responds with a green power light, but remains empty, the PC power light turns on and stays on and the HARD drive light comes on and then disappears. Mouse and keyboard do not respond at this stage. Fans are market HDD is running more DVD ROM lights up when it is started. I tried different hard drives and if you start without a HARD drive there still a blank screen. I also replaced monitor, keyboard, mouse. The real kicker is that from time to time after a lot of power downs and restarts it will boot to the BIOS and load the MBR and everything will be fine. I see that no error it connects.  Any ideas would be apresiated. Thank you!

I think I got it. The person who is the owner of the PC, said that one of the two USB ports was damaged so I unplugged the two front holes in the motherboard and it works very well and it seems to be faster starting now as well. I must say that this one had me stumped good.

Tags: HP Desktops

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