[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 921
  • Last Modified:

Windows hangs on MUP.SYS in safe mode

Windows hangs on MUP.SYS
I have a Windows computer that won't boot, it just restarts after showing the Windows startup logo.
When I go into safe mode, it hangs or stops after loading MUP.SYS.
How can I try to repair it with out reloading the OS, Programs, and data?
0
peveler
Asked:
peveler
1 Solution
 
pevelerAuthor Commented:
I experienced this problem several times.
I fixed this problem by doing the following steps.

Remove and install the crashed hard drive, as a secondary drive, into a working XP or 2K computer.
Start up the working computer and let Windows discover and install the secondary crashed hard drive.
After doing this I went into explorer and saw the crashed drive and noticed it was installed as drive E:
Now explorer might assign a different drive letter to the crashed drive, depending on the number of drives you have in your working computer.  Use Explorer to identify the crashed drive letter assignment.
When I clicked on drive E: to browse it, Explorer came back with a frightening message, saying drive E: is not formatted, do you want to format it now.  Of course the answer is no, which I advise you not to do.

I repeat, do not format the Drive E:

I exited explorer.
I opened a command prompt.  Start,Run, Cmd, enter.
From the command Prompt I ran chkdsk e: /f,   e: being the drive letter that Windows assigns to the crashed drive.

At first, chkdsk ran slow and found about 20 innaccessible sectors, which once again frightened me. ( I have a kind and weak heart) but it eventually sped up and fixed bad areas of the hard drive.

When chkdsk finished, I restarted the computer.
I went into Explorer and at this point I was able to browse drive E:
I copied the My documents folder, the favorites folder, and other data files to the good drive C: so that I could have a data back up of the crashed drive in case I have further problems.

I removed the crashed drive from the working computer and installed it into the origanl computer, and Windows started just fine.
I advised the owner that they should backup their data files, and replace the hard drive because it may be going bad.

I also used this same method to access a crashed RAID controller drive.

Good Luck
P.S.  I asked and answered my own question here so that I could share this method with my fellow experts
0

Featured Post

Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now