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Repair PC Error, Booster PC

Easy way to get rid of PC issues


My computer keeps shutting down and then when i log back in I get "the system has recovered from a serious error" ERROR_INVALID_SUB_AUTHORITY problem. I have no idea of how to troubleshoot ERROR_INVALID_SUB_AUTHORITY Doe SmartPCFixer really work? Can you offer me an effective way to remove my PC issue?

I suggest you to perform the methods provided below and check if it helps.
Method 1:Launch SmartPCFixer to solve ERROR_INVALID_SUB_AUTHORITY problem.

1. Click the below button to download SmartPCFixer.

download smartpcfixer

2. Launch the tool, you will see the below interface.

smartpcfixer screenshot

3. Click [Quick Scan] to run a whole scan for your computer.

4. Click [Fix All] to fix ERROR_INVALID_SUB_AUTHORITY problem.

Method 2: Run a system restore for [[my_os]]

System Restore is a master key to fix ERROR_INVALID_SUB_AUTHORITY issue.

System Restore helps you restore your computer's system files to an earlier point in time. Typically, you want to restore your computer to a restore point that was created just before the date and time when you started noticing problems. The descriptions of the restore points that are created automatically correspond with the name of an event, such as Windows Update installing an update. System Restore returns your computer to the state that it was in before the restore point that you choose. ---Quote from Microsoft website.

Windows 8 Restore:

1.From the Windows 8 Start screen, type "Restore." The top result in the right-side Search panel should be "Create a restore point." Even though that's not what we're doing today, that's the choice you want to make. It opens the Control Panel to the Systems Properties dialog's System Protection tab
2. Tap the first button on that property sheet: System Restore. This opens a wizard-like dialog, the first page of which says "Restore system files and settings" Here you get another chance to see which programs will be lost and gained. Tap "Next."
you'll see a dialog with a choice of system restore points.

Windows 7 Restore:

1.Open System Restore by clicking the Start button Picture of the Start button. In the search box, type System Restore, and then, in the list of results, click System Restore.‍ Administrator permission required If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
2.Click Recommended restore, and then click Next.
3.If there isn't a recommended restore point, follow the steps below to choose a specific restore point.
4.Review the restore point, and then click Finish.


ERROR_INVALID_SUB_AUTHORITY file is really an important files for your system. You should never ignore it. In a word, ERROR_INVALID_SUB_AUTHORITY removal software is the best solution that will resolve issues with the shortest time.

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