I have an HP-Compaq small format desktop PC that has a 1.8 GHz Core 2 Duo in LGA775 package.
I tried to replace it with a 3.0 GHZ Core 2 Duo ( I think it's an E8400 ). After replacement, I replugged
the power cord and turned on the PC. The machine bleeped and the power LED blinked red thrice,
then the power supply disabled itself. I put back the old CPU, but now the PC also bleeps and the
power LED blinks red when I turn it on, with the difference that the fans and DVD drive continue
to operate, and the bleeping and blinking stops for a while, then repeats.
This seems an overload problem, but the PC worked before I attempted that replacement
and I have seen machines of the same model using up to 3.3 GHZ Core 2 Duo CPUS.
Could it be that the new CPU was bad and burned some onboard voltage regulator ?
Does anyone have some repair advice ?
I tried to replace it with a 3.0 GHZ Core 2 Duo ( I think it's an E8400 ). After replacement, I replugged
the power cord and turned on the PC. The machine bleeped and the power LED blinked red thrice,
then the power supply disabled itself. I put back the old CPU, but now the PC also bleeps and the
power LED blinks red when I turn it on, with the difference that the fans and DVD drive continue
to operate, and the bleeping and blinking stops for a while, then repeats.
This seems an overload problem, but the PC worked before I attempted that replacement
and I have seen machines of the same model using up to 3.3 GHZ Core 2 Duo CPUS.
Could it be that the new CPU was bad and burned some onboard voltage regulator ?
Does anyone have some repair advice ?