Post Error Occurred Completely Stuck Now!???

[airrunner]

Can anyone help me with this, when trying to boot the message post error occurred comes up and asking me to boot default every single time i modify my multiplier etc in the bios for an overclock. Im sure it's down to my overclocking but i dont know how to stop it and for it to allow me to carry on overclocking, can anyone help?

I have flashed the bios

I have reset the bios

my pc amd phenom 550 unlocked x4 was 3.6 but now 3.1
thermalright venomous x cpu cooler
gigabyte m790x motherboard

If anyone can help me out here, your a bloody genius!!

 

[1Day]

If you have cleared the CMOS using this method - by taking all the bits and bobs out of the mobo and removed the power cable from the PSU - and the battery too - then do the clear of the cmos and leave for a hour or so. If yes and you are still getting a post error then it is your hardware that is giving you a problem.

Do a memtest of each of your ram sticks and see if they are the problem.