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Why is CPU usage at 100% with nothing running?

Old 08-16-01, 03:00 PM
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Why is CPU usage at 100% with nothing running?

Help!

Win2K machine, 933mhz, single cpu (dell server machine). Only 128megs of RAM, going to be upgraded.

No applicatons open.

under SYSTEM, Performance, there are a lot of things all showing 0 usage.

But one, SYSTEM it shows 97-100% usage.

Ideas?
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Old 08-16-01, 03:06 PM
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It is also taking an obscene long time to boot, like 5 minutes.

We also note it's now having problems running programs. The little flashlight comes on that looks for the program that used to be right there. What?
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Old 08-16-01, 03:22 PM
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Is that your Gateway (you said Dell, is it)? Did you install IIS? Did you install it off the internet until you applied the Code Red patch?
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Old 08-16-01, 03:29 PM
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Ack...

Yes, Gateway.

Same was what was supplied on the HD

No patches applied.

Yes, I am clueless and out of it and on medication.
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Old 08-16-01, 03:34 PM
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Sounds a bit like what happened to me because the Code Red II virus has appeared since your OS was installed. Read this and look for the Code Red file. Let me know.

http://www.dvdtalk.com/forum/showthr...highlight=code
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Old 08-16-01, 03:34 PM
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We just checked and per MS website, we don't have any scripts in our \inetpub\scripts subdirectory, which according to them, means we don't have a problem with code red.
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Old 08-16-01, 03:39 PM
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Better keep it off the internet until you get it patched though.

So you just installed the drive, turned it on, and it's doing this?
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Old 08-16-01, 03:45 PM
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It seemed to take a long time to boot when the HD was first installed. We did nothing to it, but install it and boot off it.

Today it became VERY bad. Not finding files or programs. Programs not running or locking up.

CPU usage went to 100%. My cable modem is showing a lot of receiving data activity when there should be none.

We are behind a Linksys router/firewall and then behind Black ICE.

Oddly, Black ICE shows that since installing the LinkSYS, we have had ZERO intrusion attempts, except on that one machine, 2 days ago.
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Old 08-16-01, 03:47 PM
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I'm not as familiar with 2k as I am with NT. Does the performance monitor allow you to look at individual threads. There are about 30 some odd threads launched under the SYSTEM process. Run performance monitor and see if you can isolate a particular thread that is causing the cpu usage.

Also, check your page file settings. If somehow your page file was corrupted or is set to a very minimal amount, alot of disk swapping will eat up CPU performance. Are you experiencing alot of disk activity with this usage?

Also, check your network settings. If you are running NETBUI, turn it off. If I run NETBUI on my machine, it eats up 98% cpu usage. You shouldn't need NETBUI if you have your network set up correctly. And NETBUI is a real hole when it comes to security. At least with NT.

Good Luck
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Old 08-16-01, 03:47 PM
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A firewall will not stop Code Red if it allows HTTP (port 80) traffic in.

Can you take it off the network and start it up by itself? Have you set your networking properties on it?
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Old 08-16-01, 03:52 PM
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Originally posted by randyc
Oddly, Black ICE shows that since installing the LinkSYS, we have had ZERO intrusion attempts, except on that one machine, 2 days ago.
Are you running any other IIS machines? Other computers may have nothing to attack.
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Old 08-16-01, 03:57 PM
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That is the only IIs machine. The others are plain 2K and 98.

We can try turning off netbui. The machine is networked to my other computers.

Looking at performance properties, all show 0 usage, except system which shows 100%.
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Old 08-16-01, 03:59 PM
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Originally posted by randyc
That is the only IIs machine. The others are plain 2K and 98.

We can try turning off netbui. The machine is networked to my other computers.

Looking at performance properties, all show 0 usage, except system which shows 100%.
Netbui shouldn't be on there. Have you set your IP settings correctly? You're not using DHCP, are you?

Disconnect the computer from everything else and boot it up.
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Old 08-16-01, 04:01 PM
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We disconnected and are rebooting.

We disabled Netbui, but we are using DHCP because (IIRC) that is what the LinkSYS uses (dynamic IP assignment).

*sigh* I used to know all this crap bet in the old days of DOS and Novell.
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Old 08-16-01, 04:02 PM
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Not connected to network and still taking many minutes to reboot.

It just sits there, no disk activity...then a few minutes later it boots up
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Old 08-16-01, 04:04 PM
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It's not going to be totally happy being disconnected and using DHCP. After it comes up take a look at it and you might just need to set a real IP in there temporarily.
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Old 08-16-01, 04:06 PM
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Originally posted by randyc
Not connected to network and still taking many minutes to reboot.

It just sits there, no disk activity...then a few minutes later it boots up
Can you give me a better idea about the time it takes from being off to memory count and from memory count to Windows starting to boot?
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Old 08-16-01, 04:09 PM
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Would this be better if you called me?
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Old 08-17-01, 02:26 PM
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Sorry, was called away abruptly to do some social engagements.

The answer is that we did the above stuff. I think it was network related and is now fixed. CPU usage when idle is not near zero. We tweaked so many things, it's hard to say what fixed it.
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Old 08-17-01, 02:29 PM
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Originally posted by randyc
Sorry, was called away abruptly to do some social engagements.

The answer is that we did the above stuff. I think it was network related and is now fixed. CPU usage when idle is not near zero. We tweaked so many things, it's hard to say what fixed it.
Does this mean you can stop taking your medication?
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Old 08-18-01, 04:10 PM
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Originally posted by LBPound23


Does this mean you can stop taking your medication?
Hey, I was heading out to an Aerosmith concert!
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Old 08-21-01, 02:52 PM
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Originally posted by randyc
Sorry, was called away abruptly to do some social engagements.

The answer is that we did the above stuff. I think it was network related and is now fixed. CPU usage when idle is not near zero. We tweaked so many things, it's hard to say what fixed it.
Just an FYI, even moving the mouse will cause CPU usage to spike to ~%5 or more (at least on my 866 w/256RAM it does).

Also, to check what system process is/was choking your cpu, if you click on the Processes Tab in the Task manager, it will list what processes are running in the background and how many cpu cycles and RAM each process is using. This is usually a good way to see what the heck is making your CPU work so hard.

But it seems like you got your problem fixed.
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Old 08-21-01, 05:29 PM
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just out of curiousity... rightclick on your task bar (next to your quick launch buttons) and bring up the task manager..

look under processes..

how much cpu is being used by services.exe and how much for system idle processes?

the reason I ask.. is I had a similar problem with a win2k machine yesterday.. ended up installing 2k over itself to finally fix it, because it was too slow to actually work on it from within windows (safe mode or normal)
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