I'm having trouble turning on my computer. I turn it on
it runs through the normal start process then when it
gets to the WIndows XP Home loading screen after it loads
for a few it restarts it. It just keep repeating this
process. I have tried going through safe mode but have
recieved the same results. I think it has somthing to do
with "mup.sys" I also put in my Windows XP disc and ran
the Recovery Console and I recieved this error message:


A problem has been detected and windows has been shut
down to prevent damage to your computer.


IF this is the first time you've seen this stop error
screen restart your computer. If this screen appears
again follow these steps:

Check to make sure any new hardware or software is
properly installed. If this is a new installation ask
your hardware or software manufacturer for any windows
updates you might need.

If problem continues, disable or remove any newly
installed hardware or software. Disable BIOS mempry
options such as caching or sahdows. IF you need to use
safe mode to remove or disable components restart your
computer press F8 to select Advanced Startup Options and
then selelct Safe Mode

Technical Information

***STOP 0x00000050 (0xc4e0000, 0x00000000, 0x8091301,

Pavel A.

The following is description of this error from Microsoft's documentation.
Please read and see is it makes sense for you. If not - call your local support specialist or
computer techician.
Good luck.

Bug check 0x50 usually occurs after the installation of faulty hardware or in the event of failure
of installed hardware (usually related to defective RAM, be it main memory, L2 RAM cache, or video

Another common cause is the installation of a faulty system service.

Antivirus software can also trigger this error, as can a corrupted NTFS volume.

Resolving the Problem
Resolving a faulty hardware problem: If hardware has been added to the system recently, remove it to
see if the error recurs. If existing hardware has failed, remove or replace the faulty component.
You should run hardware diagnostics supplied by the system manufacturer. For details on these
procedures, see the owner's manual for your computer.

Resolving a faulty system service problem: Disable the service and confirm that this resolves the
error. If so, contact the manufacturer of the system service about a possible update. If the error
occurs during system startup, restart your computer, and press F8 at the character-mode menu that
displays the operating system choices. At the resulting Windows Advanced Options menu, choose the
Last Known Good Configuration option. This option is most effective when only one driver or service
is added at a time.

Resolving an antivirus software problem: Disable the program and confirm that this resolves the
error. If it does, contact the manufacturer of the program about a possible update.

Resolving a corrupted NTFS volume problem: Run Chkdsk /f /r to detect and repair disk errors. You
must restart the system before the disk scan begins on a system partition. If the hard disk is SCSI,
check for problems between the SCSI controller and the disk.

Finally, check the System Log in Event Viewer for additional error messages that might help pinpoint
the device or driver that is causing the error. Disabling memory caching of the BIOS might also
resolve it.


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