Originally Posted by
Ferret
Fans start, POST reports 1 beep then PC continues the boot process for ~ 10 secs before shutdown.
This is correct.
Have you upgraded anything recently say in the last 8 weeks or so, a new graphics card, additional hard drive? In some cases a marginal PSU will drive the new gear for a while but the additional load over and above its capacity to deliver will cause accelerated failure.
The fact that you are passing POST seems to suggest there is nothing basically wrong until the PSU is asked to ramp up the power.
nothing new,,,