Windows lockup issues that freeze your computer while booting can turn to be one of the most frustrating experiences. The mup.sys hangs is one of them that you can encounter while attempting to load Windows. This can occur out of several reasons. Thus, based on the issue in case, you can have multitudinous of Hard Drive Recovery solutions, as mentioned in the article.

Before discussing the solutions to mup.sys hangs, let's first depict various symptoms that you as a Windows user might experience when booting your computer:

You start the computer in Normal mode and it hangs after showing the Windows logo and the progress bar.

You start the computer in Safe mode and observe that the last system driver that loaded was mup.sys.

You start the computer and Windows starts rebooting continuously just after loading mup.sys driver.

Reasons

The prime reasons for mup.sys hangs are mentioned below:

You have installed a new hardware, but not correctly or the hardware is faulty.

A Windows driver or Windows is corrupted or outdated. This can occur because of a virus.

Computer power supply is limited or faulty.

Windows registry or registry hive is corrupted. BIOS or a motherboard chipset drive is conflicting with Windows component(s).

One or more hardware components (including motherboard) are failing Hard drive is corrupt or failing

Solutions

The corresponding solutions to the given problem are discussed underneath:

Try removing the recently installed hardware, one at a time and reboot

Try running an anti-virus scan from a bootable CD or diskette or boot the computer using a Windows repair or install CD to repair Windows Check for the power supply voltages when booting the computer or replace it

Try to detect and replace the damaged Windows registry components manually

Detect and replace the conflicting component(s)

Detect and replace the failing hardware

Try to repair the hard drive by running chkdsk (Note: If the hard drive is failing, the best solution is to replace the hard drive). However, if chkdsk doesn't resolve the hard drive corruption, reformat the hard drive and restore the deleted data either from backup or by running a Hard Drive Data Recovery utility. Using a Hard Drive Recovery tool is best recommended before reformatting the hard drive.

Stellar Phoenix Windows Data Recovery is one of the best utilities that can recover lost data from Windows 7, Vista, XP, 2003, and 2000 computers. This Hard Drive Data Recovery tool supports FAT32, VFAT, NTFS, and NTFS5 file systems and provides variety of advanced recovery options.