I'm having problems with my pc. Fans fire up, sounds like hdd is doing something, dvd/cd drives open and close but no display on monitor. No post beeps at all. Although if I leave it off for a while and start itll post, get into grub boot loader ok, but in memtest it goes mad. Windows wont boot, says some file is corrupt. Haven't tried booting linux. If it manages to post and I reboot, I won't be able to get it to post unless I leave it off for a while. I'm 99% certain its a faulty mobo or psu, so I'm gonna change both. As far as I understand a working motherboard will report and hardware errors (bad memory, no video, bad cpu) through beeps? I'm reading contradicting information. Some say the pc won't beep without a cpu, others list beep codes for a missing cpu. So unstable posting is a bad mobo or cpu? I just wanted an opinion of people on this board. I have a P4 2.4 533 Northwood so I doubt ive cooked it. I don't overclock. I'm just hoping my cpu is ok and all I have to do is change the board.