Hi Jef,

Any tasks would be in task scheduler, and you mentioned that you already
looked there. I would suggest you try process explorer to see if you can
detect what is going on:

http://technet.microsoft.com/en-us/s.../bb896653.aspx

The regularity of it suggests a timed event, perhaps a weekly full system
scan by your antivirus or antimalware product.

--
Best of Luck,

Rick Rogers, aka "Nutcase" - Microsoft MVP
http://mvp.support.microsoft.com/
Windows help - www.rickrogers.org
My thoughts http://rick-mvp.blogspot.com

"Banjo200" wrote in message
...

I have an HP Pavilion Intel Core 2 Quad 4GB Memory running Vista 64 Home
Premium Edition. The Computer runs great except once a week around the
sametime on Monday night the copmputer runs slow (100% Disk according to
Performance Monitor ) I have turned off superfetch, Defrag, indexing.
Virus updater and everthing else in the task scheduler.

What tasks does Vista do once a week that is not scheduled that would
impact performance, can I turn it off, delay it....... What is Vista
doing?

Thank you,

Jef


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Banjo200