AAH said:
Rey
Thanks for your response.
The message on the screen came up
"Stop: c000021a {Fatal syystem error}
The article refers to Roxio Easy Cd Creator 5.
This software is not installed on this computer.
Can you help about the Fatal System Error?
It can also be caused by malware. You can see in this thread,
the person being helped, has multiple symptoms, only one of which
is getting c000021a on shutdown. (You don't just copy what
they're doing in threads like this, because the response from
the helper, is customized for just the person being helped.)
http://www.bleepingcomputer.com/forums/topic85810.html
Perhaps you could attempt to scan the computer with something.
This page has an entry for 0xC000021A, which shows you the
reason it could happen, but this won't address how many pieces
of malware that could be tipping over the system in the same way.
http://aumha.org/a/stop.htm
It's possible to do offline scans of the OS, using things like the
Kaspersky rescue CD. As long as your computer has an Internet connection
that support DHCP (like my ADSL modem), when the scanner CD boots,
it should be able to connect to the web site and get virus updates.
Then it can be used to scan your computer. The tool will normally
attempt to update the database, within about 30 seconds after the
OS on the CD is booted.
http://devbuilds.kaspersky-labs.com/devbuilds/RescueDisk/ 120,985,600 bytes
http://devbuilds.kaspersky-labs.com/devbuilds/RescueDisk10/ 208,261,120 bytes
Since these downloads are ISO9660 format, you use a tool like Nero,
ImgBurn, or CDburnerXP. The tool needs to know you want it to parse
the ISO file, and make a bootable CD from it.
http://en.wikipedia.org/wiki/List_of_optical_disc_authoring_software
When you burn the first download to a CD using something like Nero or
ImgBurn, and boot the CD, the virus update will be somewhere around
a 70MB download. If you download the latest CD, the CD download
itself is larger, but the virus database update is about 7MB right now.
I just tried out the RescueDisk10 in a virtual machine, and
the scan is just as slow as the previous one. (The OS on the CD is
Gentoo, so it is Linux based.) The RescueDisk10 supports a text screen
mode, for times when the graphics aren't working (like in my virtual
machine window - a real PC should work better - I try to test in
a VM first). The older CD doesn't have as many modes, but I've used
the older one several times to scan my system. I used to have a Kaspersky
subscription, and at least its initial disinfection of my system was pretty
impressive. But the subscription version was so annoying, I didn't subscribe
the next year (almost as bad as UAC). The computer had become
"Kaspersky's machine" rather than "my machine". Since this is an
offline scanner, it isn't quite the same thing, but at least
it might tell you if there is malware present.
Paul