Quick question about the svchost app

[Nuriko]

OK, so I know Windows uses svchost for a number of its services. I've got a desktop running windows 7 pro that upon startup svchost spikes the CPU and will increase it's RAM usage every second. I can kill the process, but it starts back up again. How do I go about determining which service is actually using this instance of svchost? I tried tying the PID to the service, but it lists like 8-10 services using the same PID as this instance of svchost (which might be the problem itself?) Anyway, any thoughts on how to diagnose this?

Oh, ran Spybot, Anti-Virus, etc, which cleaned up a bunch of stuff, but didn't solve the problem.

[Isiolia]

You should be able to use Process Explorer (which you can get here ), double click the svchost process that's using all the resources, go the Threads tab, and sort by CPU use. I think.

[The Stig]

I believe it would be Windows Update sapping it, but yeh as Isiolia said, use ProcExplorer to find out first.

[Nuriko]

Ooooh right, forgot all about process explorer (been so long since I've had to diagnose a machine like this). Thanks, will definitely use that tomorrow. And yeah, could very well be Windows Update, that's one other thing that hasn't been working right (not downloading updates, like, it just sat there trying to download for like an hour before I gave up and chalked it up to whatever the main malfunction was, didn't consider it could be part of the problem itself). Thanks again!