Clean up the fan and heat sink get some Artic silver, Run a benchmark tool I run Prime95 and speed fan. Keep a eye on temps this will eliminate any heat related issues. Whilst you are cleaning out the heatsink have a look at the board for signs of bulging capacitors.
Remove the PSU and check how much juice the rails are putting out.
Replace PSU if necessarily I usually go with Tagen, Corsair, Akasa all are well built usually can tell by the weight of the supply. Heavier the better :)
Like people have suggested run memtest I usually do two passes
Is the computer crashing in linux or failing before? During POST you need it.
I also run Eurosoft PC Check on all my builds not sure if this is freely available good piece of software that checks the internals of the computer.
Sent from my iPhone
On 9 Nov 2013, at 13:26, "Alex Dicks" <alex@???> wrote:
> Could be a problem with the power supply. On an old computer, it took a
> while for the power supply to warm up. The workaround was to pause at
> the bootloader menu, leave the computer for a while, then reset it. (It
> would usually freeze withing a minute after being turned on, so letting
> it do that at the bootloader rather than while loading the operating
> system saved on having to fsck.) The solution was to buy a new power
> supply.
>
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