Windows XP rebooting - mup.sys?

Hello all.

I'm posting here because I honestly don't know where else to get an informed answer.

Earlier today my computer froze when I was trying to log off. I just turned it off.

Now when I boot up I get a momentary flash of a blue screen with some text content and the system restarts. It's too fast for me to read.

I read another site that suggested I put the XP CD in the drive, boot up with it and use it to repair. I did that, and got a prompt. But when I try to do a dir on the contents of C: (the 98 boot drive) and D: (the XP boot drive), it says that there was an error enumerating the directories. All of the other logical drives list just fine.

If I boot up in safe mode, it lists all these driver files, stops on Mup.sys, and reboots.

If it's time for me to do a format and reinstall (I've been running the same system for 2 years), then that's fine, I can handle that. I would just like to know if there is anything else I can try that will get my system back to working order. Could it be a boot sector virus?

Thank you for any suggestions!

I am running Windows XP Pro SP1 and have been keeping up to date with the latest updates, and I have Norton 2002 installed.
[1288 byte] By [kilroy12] at [2007-11-18 17:20:59]
# 1 Re: Windows XP rebooting - mup.sys?
Hmm never looked at a bugcheck for mup.sys, it's the multi UNC network driver. Are you connected to a network? If you are, just for kicks, disconnect yourself before you boot. But this most likely not it, since your having a problem reading directory entries when you boot from the CD.

Run a chkdsk on the filesystems first.
Mick at 2007-11-10 3:40:56 >
# 2 Re: Windows XP rebooting - mup.sys?
I ran chkdsk from the recovery prompt, and on both C: and D:, it said that there was one or more unrecoverable problems, with no other messages.

I should make some Norton Recovery Disks from my second machine and do a command prompt scan. Don't even know if Norton can detect boot sector viruses.
kilroy12 at 2007-11-10 3:41:57 >
# 3 Re: Windows XP rebooting - mup.sys?
Well, I'm running a Norton scan from the 2003 boot CD now. Strange that it has no problem reading the C: and D: drive now. It didn't detect any boot sector viruses, but then again who knows how smart these viruses are.

Maybe someone just doesn't want me to get this computer working again...
kilroy12 at 2007-11-10 3:42:56 >
# 4 Re: Windows XP rebooting - mup.sys?
Originally posted by kilroy12
Well, I'm running a Norton scan from the 2003 boot CD now. Strange that it has no problem reading the C: and D: drive now. It didn't detect any boot sector viruses, but then again who knows how smart these viruses are.

Maybe someone just doesn't want me to get this computer working again...

Ok so you ran chkdsk, and it said it had unrecoverable errors (and nothing else, other than the fact it probably did fix some directory entries etc) but after that you were able to access the c: and d: drives?

If so try running some HDD scan tests, and or repair and see if there are some bad sectors on the drive etc.
Mick at 2007-11-10 3:43:53 >
# 5 Re: Windows XP rebooting - mup.sys?
Actually I wasn't quite clear.

With the repair option of the Windows XP boot CD, I wasn't able to read the C: and D: drive.

With the boot off from the Norton 2003 CD, I was.

Actually, I'll double check and make sure I've done a chkdsk on both drives...

Virus scans turned up negative in the WINXP directory, boot sectors and root folders of C: and D:

Also, just for kicks I renamed mup.sys to mup1.sys when I had access to the WINXP boot drive (to keep it from loading), and I still got the same result when I rebooted... so it seems the problem is NOT mup.sys, but some other combination of factors.
kilroy12 at 2007-11-10 3:44:56 >
# 6 Re: Windows XP rebooting - mup.sys?
Well, I decided to reload Windows XP, after putting the hard drive in an external USB storage and trying to access it with my laptop, with still no luck.

But now, yay, I tried to flash my BIOS to the latest version after getting continued lockups on my video card, and the motherboard no longer responds, failing to use the backup BIOS. Protection indeed.

Thanks for all the help. anyway. My problem was probably a combination of having run the same machine for 2 years, with who knows how much adware crap was on my machine by now, and possibly the hard drive starting to go bad.

At least I didn't lose my work. That's the important thing.
kilroy12 at 2007-11-10 3:45:55 >
# 7 Re: Windows XP rebooting - mup.sys?
there is a key combination that forces DualBIOS systems to use the backup bios. be more careful when flashing :)

Video cards lock up due to overheating and poor power supply performance as well as unstable drivers. your vid card has a bios too :)

Many people i know format and reinstall windows at least once a year,, until they get sick of it and sitch to another OS. Reduce adware by installing Spybot, Spyware blaster and the google toolbar. In spybot, scan for problems and remove them, enable bad pages blocker on silent mode and immunize against all known web-based spywares. in spyware blaster immunize against the further X number of spywares that spybot doesnt know about, and keep both as up to date as possible

dont read suspicious email attachments - no matter "how cool" that screensvaer is, if it hoses your machine and costs you just 1 days work, it wasnt worth it. buy a $100 really cool screensaver package instead (with your days wages) and it will cost you the same but your machine wont be screwed :)
avoid all attachment that do not have the following extensions:
.jpg .mpg .txt .mp3 .gif <-guaranteed data only NO VIRUS files

treat with caution:
.zip .rar .doc .ppt .pps .xls .mdb

as they can all contain macro viruses or programs that are infected (zip/rar archives)
cjard at 2007-11-10 3:47:05 >