re: Mup.sys? Hangs but not? Wha's happening?
Wednesday, June 16, 2004 at 10:44 am Windows XP Annoyances Discussion Forum
Posted by Bo Gusaddy
(3 messages posted)
I just joined the club.
Happened last week when my computer fell over while powered up after I perched it
somewhat precariously on the edge of a cushion (don't ask). I had also just reinstalled
some software, but I can't directly attribute the problem to that.
Almost immediately after the fall my computer crashed and then went into a boot loop
like many of you are experiencing.
A quick peek at safe mode showed me that mup.sys was the last driver loaded before
it restarted itself.
Anyway, I was without internet at the time and wasn't aware of the notiriety of this
problem, so I resorted to troubleshooting with diagnostic tools I had on hand. One
of my tests involved popping out all my cards except video, and running memtest86
on my 2 512MB DIMMs. I ran the tests on the DIMMs as a pair in several configurations,
and individually. Memtest86 reported errors in every configuration, almost immediately.
I then tested my RAM in another machine using the same method with no errors reported.
This, was a clear indication to me that the mobo (Gigabyte GA-7VRX) was damaged,
so I went out and purchased a new one (Gigabyte GA-7N400 Pro 2). I also bought some
new PC3200 RAM because my current RAM was only PC 2100.
I installed my CPU, RAM and system drive in the new motherboard and powered up only
to find that the computer still hung at mup.sys.
I reformatted a spare partition on another drive, installed XP and had a look at
my non-booting original partition. everythings seems intact. No aparant data loss,
at least.
It would appear that the problem with the boot loop has something to do with data
that lives on the drive, independant of the system hardware (hence deduced by the
fact that the drive is on a system comprised of completely different hardware than
it was on when the problem occured).
Aaaanyway,
I poked around for a while on Microsoft KB and found ties between the "mup.sys" problem
and DFS (Distributed File System). It seems if DFS is disabled somehow, then such
problems can arise.
I don't have any solutions yet but hopefully my continued poking and prodding will
yeild some helpfull information that I can share with you all here.
Wish me luck.
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 |  | re: Mup.sys? Hangs but not? Wha's happening? (Bo Gusaddy: Wed, Jun 16, 2004, 10:44 am) |
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