When I try to start my PC I can hear the CPU fan spinning up then turning itself off before again spinning up, repeating itself. Nothing is visible on the screen. Disconnecting the power plug and pressing the power on button to flush the system of residual charge sometimes helps avoid this problem and about 1 in 5 times I am able to boot the system.
Once the system is running it usually crashes within 2-6 minutes. See attached image for error(s):
Is this the sign of a faulty motherboard, as the PC has problems starting? Is there other hardware which could be failing?
Side note: A few weeks ago, the problems were not too severe and the computer would only crash after an hour or two so I was able to do an upgrade, thinking this would help. Having tested my PC under Ubuntu 13.04 and after upgrading to 13.10 (currently installed) the problem still persists. I have also tried various kernels to no avail.
The issues exist even if I don't log in to graphical mode (Ctrl + Alt + F1). Any help is appreciated.