• Now's your chance win big! Join our community and get entered to win a RTX 2060 GPU, plus more! Join here.

    Pi Cast Episode 3 streams live on Tuesday, August 4th at 2:30 pm ET (7:30 PM BST). Watch live right here!

    Catch Scharon on the Tom's Hardware Show live on Thursday, August 6th at 2:00 pm ET (7:00 PM BST). Click here!

Question Troubleshooting help. PC not entering POST, HDD not active

Apr 30, 2020
I've been having this issue for around 2 years but i'm finally bored enough to try and fix it but I need some advice. When I power my machine up the LEDs and fans will begin to run but there is no monitor output and the HDD light does not show that the disk is active. Ocassionaly it will momintarily power off then back on again, after this is fans continue to run. I've tried the monitor and it does work its not a case of the sceen just not turning on. Its an old build so I'm not mad that its died I just want to know if I can fix it.
ASUS P5Q motherboard
I have a feeling its got a pentium quad in it?