mup.sys

It's really difficult to figure out the reason as to why the mup.sys error occurs in the first place. But there are many ways to fix this error.

Some times the mup.sys error occurs in a system boot hang and it becomes impossible to figure out the reason for error in such cases.

The Windows XP/2000 mup.sys blue screen could occur due to various reasons...

• Invalid/Duplicate registries
• If the hard disk is corrupted
• If the software or hardware is not installed the right way
• If the drivers/system files have been infected by virus
• Drivers need to be updated
• It could happen due to failure of power supply
• If the BIOS settings are incorrect
• If the mup.sys driver gets corrupted

There are many more reasons for this error to occur. So it's advisable that you back up your data before going in for the fixes.

• Use a registry cleaner to clean the corrupted or duplicate registries.
• Try changing the hard disk with a working one
• Try uninstalling and newly installed hardware or software and clean the registries
• Try giving your system a scan for virus and malware.
• Install the latest updated drivers for your hardware
• Try resetting the BIOS setting to default mode
• Try replacing the mup.sys with a new copy
• Try restoring the system to the last known best configuration