Postby sabrex » Thu Mar 22, 2012 14:28
While the machine is off. you need to unplug hdd/cdrom drive and front usb ports from the motherboard. Remove the memory sticks.
when you power on the machine should give a relevent post about no memory (12 beeps Motherboard does not detect a RAM module (continuous beeping) )
If this does beep you can safely say the CPU is ok - the POST has moved from cpu to board ram and not found any.
If you have a bad ram stick it could be that so if you have more than 1 stick of ram try 1 ram stick - test - try other where neccesary.