How to fix An unspecified error occurred during System Restore 0x800700b7 error (Windows won't load)

If something went wrong during the system restore process and Windows won't load, an option you have is booting the computer to the last known configuration, by following the steps below:

1. Turn off the computer, either by pressing (and holding) the power button or by unplugging it from the power cord;
2. Turn on the computer and press the F8 button repeatedly.
   * If that didn't work, press and hold the power button, and the computer should redirect you to the Advanced Boot Options screen;
3. Use the keyboard's arrow buttons to navigate to Boot to the last known configuration and press Enter.
   
   

   

This will restart your computer. Once your computer powers back on, you have another chance to make things right, this time investigating what went wrong with the first System Restore attempt, before running the restore again.

The fact that System Restore files have been damaged shouldn't be neglected. You being unable to make Windows boot proves that point. Luckily, if you keep the Windows Installation DVD or USB, you have an intact and brand new System Restore utility at your disposal.

Follow the steps below, if you couldn't make Windows boot, and to run System Restore:

1. Put your USB or Windows DVD and restart your computer;
2. Keep pressing F12 until the select a bootable device screen appears;
3. Select the Windows DVD or USB from there and wait for Windows files to load;
4. Press Shift and F10 to access command prompt;
5. Type rstrui in the Command Prompt and press Enter;
6. Start the restoring process and wait for it to finish.

Maybe System Restore brought down your entire Windows OS, and even though the situation may be very bad, there is still light at the end of the tunnel, if you or someone you know keep the Windows Installation DVD or USB. Aside from containing the installation files, the Windows DVD or USB keeps a wide variety of diagnostic and repair tools in its hat. All you need to do is to run them, and forget about System Restore errors.

Follow the steps below, if you couldn't make Windows boot, and to run System Restore:

1. Put your USB or Windows DVD and restart your computer;
2. Keep pressing F12 until the select a bootable device screen appears;
3. Select the Windows DVD or USB from there and wait for Windows files to load;
4. Press Shift and F10 to access command prompt;
5. Type diskpart and press Enter;
6. Type list volume in the Command Prompt and press Enter;
7. In the list, find in which partition (volume) Windows is installed. Usually it's the smallest one in size, and it's labeled C.
   
   

   

   
   
8. Type exit and press Enter;
9. Type the following command and press Enter:
   
   sfc /SCANNOW /OFFBOOTDIR=<partition/volume>:\ /OFFWINDIR=<partition/volume>:\windows
   
   If Windows was installed in C, then, the command would look like this:
   
   sfc /SCANNOW /OFFBOOTDIR=C:\ /OFFWINDIR=C:\windows
   
   

   

10. Restart your computer;
11. Start the restoring process and wait for it to finish.