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System freezes when mup.sys loads

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4 replies

by admin

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My workstation has WinXp and Win2k. It freezes up after loading mup.sys. I can't boot into safe mode, last know good config, or normal in either OS. I saw some other discussions in the Tech Q&A but they refered to software that was just installedand the final solution was to reload the OS. Neither of those are good options for me. I haven't installed any new software and would rather not reload the OS. Can I fix this from the recovery console or the command prompt?

4 replies

by admin

I ran the XP setup auto repair (not the recovery console) and it rebooted to a blue screen with error message:

"A problem has been detected...

RDR_FILE_SYSTEM

***cdr4_xp.sys

I'm thinking that this is an error with the CD-RW.

by joseph moore

Ok, a few thoughts:
MUP.SYS is used in the Redirector service to resolve UNC names (\\SERVERNAME). I would try to boot to a Command Prompt, rename MUP.SYS to something else (MUP.OLD) and then extract MUP.SYS from the XP cd. I read in a XP discussion post that this took care of the problem.

hope this helps

by admin

I appreciate the thought. WinXP took care of itself after the winXP Auto Install Repair. Thanks.

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