mbr

Fixing the Windows 7 Master Boot Record (MBR)

If you’ve used computers for any length of time you have probably seen your computer fail to boot to Windows once or twice. This will typically be echoed by a message like one of the following:

Error loading operating system

Missing operating system

Invalid partition table

If you are seeing one of these messages there is a very good chance that there is an issue with your Master Boot Record or MBR. The MBR is the section of your hard drive that tells the computer where it can find the Operating System. Sometimes this section can become corrupted and stop functioning correctly. Luckily this is a fairly simple issue to resolve with a little time and patience.

Note** You will need your original Windows install CD for this.

Step 1.

We will need to boot from your Windows Install CD. To do this first insert the disc into the CD/DVD drive, and reboot your computer. You should be met with a prompt asking you to “Press any key to boot from CD or DVD…“. Press any key on the keyboard and this will load up the Windows installer.

Step 2.

You will then be met with the following screen, click “Install Now“.:

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Step 3.

You will then see this screen, click “Next“.

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Step 4.

Next, click the button for “Use recovery tools” and click “Next“.

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Step 5.

From this menu select “Command Prompt“.

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Step 6.

From the command prompt you just opened type “D:” to make your CD/DVD drive the working directory. Then change to the boot directory by typing “cd boot“. From the boot directory simply type “bootsect /nt60 SYS /mbr“. 

When you see “Bootcode was successfully updated on all targeted volumes” the process has completed. Type “exit” to return to the previous System Recovery Options screen and click the “Restart” button.

Your computer should now boot to Windows normally.

**If you are having trouble with these steps feel free to comment on this post or send me an e-mail. I’m happy to help you out.**