Windows Live OS with hardware test tools

[self.away at gmail.com (self.away)]

Hi

We are looking for a tool that let our Computer Tech Department to run
several hardware routines on reported PCs with hardware failures.It
seems they used to do this by requesting an account be created on that
pc and proceding to run their tests by logging to that PC with that
account.
I see a security risk on that because their responsabilities span only
hardware issues on the equipments.I am trying to avoid that.A Live OS
cd (preferibly windows based) with plenty of hardware test tools comes
to mind but i'm not sure if a better solution exists.

Thank you