Help: Need help identifying the cause of this problem....

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Hi all,

The symptoms: When connected to the internet my desktop runs at 100%
cpu usage and 100% network usage. There are no idications of which
process is actually using 100% CPU. Whatever is wrong with my desktop
is now wrong with my laptop - they both run winxp and are connected to
the same router. If I disconnect the router from the cable modem both
computers continue to run at 100%/100% - disconnect the network cables
- or disable the connection - and the problem goes away.

Right now I am writing this on my wife's mac - it is also connected to
router but works just fine. There is no burner/storage device attached
to this mac so I cannot get the latest spybot/adaware/norton updates.
My norton is 3 days old and the adaware/spybot are over a month old -
don't detect anything.

My first attempt was to completely reformat the desktop; give it a
clean slate. However, after reformat the 100%/100% problem continues.
(Laptop was not on and not connected to network). What kind of computer
virus/trojan/exploit survives a fresh reinstall of the OS?
Any advice appreciated,

Re: Help: Need help identifying the cause of this problem....
On 29 Dec 2004 01:12:13 -0800, entropy123 spoketh

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Nothing survives a fresh install of the OS, assuming the whole disk/all
disks was re-formatted. However, if the other computer on your network
is infected with a worm, it is likely that it infected your newly
installed computer.

It is peculiar that the process that eats up all your CPU doesn't show
in the task manager. Even if this is going on, you should be able to
download something, even if it may take some time.

Try starting your computer up in safe mode, and look through your
startup areas. See if you can get a copy of HiJackThis to simplify the
search for programs that start up when your computer is started. You
should be able to manually remove items from the usual places in the
registry (HKLM\\Software\\Microsoft\\Windows\\CurrentVersion\\Run,
HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Run). Be sure to check
what things are before you delete them, deleting the wrong item could be
rather unpleasant...

Lars M. Hansen
(replace 'badnews' with 'news' in e-mail address)

Re: Help: Need help identifying the cause of this problem....
Lars M. Hansen wrote:
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Its also possible that you can be infected with xp if you update it
immediately after install or are simply connected to the internet after
install. Really, you need to install without a network connection, then put
on sp1 or 2 then go immediately to the windows update site and download the
fixes. If your internet connection doesn't have a fixed connection, then
it's a good idea to leave your router disconnected from the telephone line,
so that you will be given (hopefully) a new ip when you reconnect.

Re: Need help identifying the cause of this problem....
Sounds more like you have a hardware problem with the NIC.
What is it? i.e Intel, Kingston, Realtek....
What is its driver?

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