Bug Check 0x8B: MBR_CHECKSUM_MISMATCH
The MBR_CHECKSUM_MISMATCH bug check has a value of 0x0000008B. This bug check indicates that a mismatch has occurred in the MBR checksum.
Important Info If You Have Received a STOP Code
If you received a blue screen error, or stop code, the computer has shut down abruptly to protect itself from data loss. A hardware device, its driver, or related software might have caused this error. If your copy of Windows came with your computer, call the manufacturer of your computer. If you purchased Windows separately from your computer, Microsoft provides support. To find contact info for Microsoft or your computer manufacturer, Contact Support.
If you have experience with computers and want to try to recover from this error, follow the steps provided in the Microsoft article Resolving STOP (Blue Screen) Errors in Windows.
These actions might prevent an error like this from happening again:
- Download and install updates and device drivers for your computer from Windows Update.
- Scan your computer for computer viruses.
- Check your hard disk for errors.
MBR_CHECKSUM_MISMATCH Parameters
The following parameters appear on the blue screen.
| Parameter | Description |
|---|---|
|
1 |
The disk signature from MBR |
|
2 |
The MBR checksum that the OS Loader calculates |
|
3 |
The MBR checksum that the system calculates |
|
4 |
Reserved |
Cause
The MBR_CHECKSUM_MISMATCH bug check occurs during the boot process when the MBR checksum that the Microsoft Windows operating system calculates does not match the checksum that the loader passes in.
This error typically indicates a virus.
Resolution
There are many forms of viruses and not all can be detected. Typically, the newer viruses usually can be detected only by a virus scanner that has recently been upgraded. You should boot with a write-protected disk that contains a virus scanner and try to clean out the infection.
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Build date: 4/9/2013
