Windows XP start up freezed at MUP.SYS, any suggestion? Thank you.?

Question

Windows XP start up freezed at MUP.SYS, any suggestion? Thank you.?

Answer 1

Mup is the last thing to be loaded, so it's not very informative that it froze there.  However, if you are in a business environment..

Meaning:

- your PC is part of a domain

- your files are often saved to a file server (not to My Documents)

- there are Group Policies applied from Active Directory

.        ..then you may have to set DFS to "enabled."  

This is a registry entry that I don't recommend you try yourself unless you're the IT person at your company.  

Look at step 4 on this page for how:

http://support.microsoft.com/kb/887303

Only do this if you are part of a domain, and your IT organization uses Active Directory.  Otherwise the setting is not helpful.

Generally, when a PC won't boot, it's helpful to use Recovery Console and do a check disk, followed by a fixboot.  Then, once the file system is readable again, do a defrag.  You may need to run check disk more than once to fix a PC.  

http://support.microsoft.com/kb/314058