Virus? NT Rebooting

[alunr]

I've been called to a customer site because one their servers was shutting down every 3-4 minutes.

I thouhgt it would be the blaster worm but having looked at the machine I can find no trace of it...

Any ideas???

Its NT4.0 sp6a

[dontlift]

it's not a heat problem is it?

[Fatboy]

Power supply? one of a mates lab machnes kept rebooting - thought it was blaster (which it had), after removing & cleaning up, it kept doing it - turned out to be a dodgy power supply.

[alunr]

Isolated the prob now thanks guys...

Machine was recieving dodgy packets from some idiots unprotected laptop

Had to use a packet analyser to find the bloody thing!!!