Hello,
I am having a very odd problem, my computer is very temperamental when booting. Usually when I turn it on, the cd rom flashes, fans come on, I can hear the hdd fire up - but the computer doesn't beep and post. But if I turn it off and on a number of time it eventually does boot.
I originally thought it was the motherboard Gigabyte GA-P35-S3G and so returned it to ebuyer where I brought it from, however they found nothing wrong with it and returned it to me.
When I installed the board again it posted first time, and I noticed the red LED on the bottom of my hd4850 goes off when it posts. I originally thought this LED was a power indication LED as when I opened my computer first time it wasn't posting, this light would remain lit. I am now thinking this is probably a diagnostic LED and it might tell me the possible cause of my problems. After googling it seems the card has two diagnostic LEDs, one for 12v failure and one for temperature failure. But I am unable to find any information as to the location of these two LEDs.
Can anyone help me identify the LED that is being lit? It is near the top edge towards the rear of the card.