Mup Sys Blue Screen
This post is not intended as a complete fix for mup sys blue screen freezes. You might however find some useful tips that you can try. From what people say and what I've read online, it seems that tracking down the actual cause of the mup.sys error is hardest part. Unfortunately, there are various different solutions for the same error. Yes, I know, irritating isn't it?
In addition, some people may experience a different issue, such as a system boot hang, which will not display the blue screen or an error message. In this case, locating the actual problem is even more difficult and is subject to trial and error. Surprisingly, most mup.sys issues are not even related to the mup.sys file!
The following are some causes for Windows XP/2000 mup.sys blue screen:
- Invalid or duplicate registry entries.
- Corrupted or faulty hard disk.
- Poorly installed software or hardware.
- Faulty or incompatible hardware.
- Virus/Malware infection of drivers/system files.
- Old drivers needing to be updated.
- Power supply failure or insufficiency.
- Faulty BIOS settings.
- Corrupted mup.sys driver.
There are countless others, so you would be extremely lucky to fix the problem on your first attempt. Here are some possible solutions you can try, but I wouldn't recommend trying any of these until you've at least backed up your hard drive and you're comfortable in making these changes. I'm no expert, so what you do to your computer is your responsibility (naturally).
1. Clean out your registry of redundant, corrupted or duplicate entries. You can use a registry cleaner to do this automatically. Click Here For More Info.
2. Try switching your hard disk with one that you know works.
3. Uninstall software/hardware if you suspect that it is the cause and clean the driver and registry with this tool.
4. Remove hardware that you suspect faulty, rolling back the driver too.
5. Scan your system of viruses and malware. Using multiple programs to scan your computer is better, since no program will detect all infections. Spybot S&D is a good free one to use.
6. Try installing the latest drivers for hardware on your computer.
7. Replace your power cord.
8. Reset to default BIOS settings, or upgrade.
9. Replace the possibly corrupted mup.sys driver with a new one (rename, delete and copy using the Recovery Console).
10. System Restore: restore to the last known good configuration (you will lose any updates since then.)
11. Removing and reinserting hardware: video, memory and sound cards etc.
You can also try a repair install which will replace all system files. But the chances of it being an actual mup.sys driver error are pretty slim. As a last resort you could also restore your entire computer, but rarely is this required. To check your PC of common errors and automatically fix them, try this Registry Cleaner Tool.
