[plug] diagnostics disk wanted

[Bill Kenworthy]

Hi, I have a dual boot machine that is starting to act flaky.  In
windoze it powers off randomly - changed the PS out with no change. 
Under linux it runs faultlessly, with setiathome and compiling software
at the same time, but for various reasons I am still not confident the
hardware is not to blame so want to test further.

I ve searched and there are a few hardware diagnostic disks out there
but I no idea which does a good job.  Is there something like a liveCD
chok full of hardware test diagnostics that someone can recommend?  I am
in the process of getting cpu-burn and memtest going, but would also
like disk tests, motherboard diagnostics and so on.

BillK