Vista won't sleep

[camioneur]

Any help appreciated. New PC with Vista Premium. Working fine but when put to sleep wakes up again by itself within a few seconds. Task manager says nothing running apart from windows system progs that can't be shut as they're part of operating system. Checked all the ones running whilst awake no problems. Any ideas what might be waking it up?
Progs running in background whilst awake are, AVG, Logmein, HP Digital Imaging monitor, Nokia PC suite though not connected to a phone, Sync Centre for PDA though not connected to one and Roboform!

[ACtheTROLL]

you me ... and quite a few others ...

Its a power management issue .... enabling s3 and advanced power management in BIOS and in power settings ... should cure the problem.

If not ... update your BIOS .. and mo bo drivers .... if not wait for an update that does fix the problem.

the good news is that almost as many ppl are having problems waking up a machine that's asleep