How to Manually Repair Windows 7 Boot Loader Problems
follow few steps
step 1:
The first thing you’ll need to do is boot off the install disc, and then click through until you see the “Repair your computer” link in the lower left-hand corner.
Step 2 :You’ll need to choose the correct installation of Windows and then click the Next button.
Step 3 :And then you’ll get to the System Recovery Options screen, where you can get to the Command Prompt.
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Repairing the Master Boot Record
If you want to restore the master boot record, you can simply type in the following command:
bootrec /fixmbr
You can also write a new boot sector onto the system partition with this command (which is often more useful):
bootrec /fixboot
And of course, if you just use bootrec /? you’ll be able to see all the options.
Using the Automated Startup Repair
Of course, all this command-line stuff is probably not necessary in most cases. You can usually just use the Startup Repair option from the Recovery menu…
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It’ll check for problems and probably fix them. If not, then you can always use the command prompt.Have you ever needed to restore your boot loader to get Windows working again?
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Possible duplicate of I want to go back to Windows 8, how? I deleted Ubuntu 16.04 and the Windows bootloader doesn't work
– TheUnknownGeek – 2016-12-02T15:19:37.033