This particular problem is with Microsoft windows OS installation. Not with PCS7 91 build.
According to the Microsoft community, it's not a new problem that quite a lot of Windows users have encountered with CMD keeps popping up the error. However, most Windows users are still not quite clear about what they shall do when such a problem comes out. So what can you do when such a problem occurs to your in Windows 10/8/7?
Below method will you how to clean boot Windows also got for Survey 10 as an example for you to follow and clean boot your PC.
Note: 1. Please do remember to log on to your computer as an administrator so to perform a clean boot. 2. Make sure that no other software are installed and running in bakgroung other than Windows 10 3. You have to do below steps on newly installed Windows 10 PC.
Steps:
1. Click "Start" and search: msconfig select "System Configuration";
2. Click "Services" on System Configuration click and select "Hide all Microsoft services" click "Disable all";
3. Click "Startup" on System Configuration click "Open Task Manager
4. Select each startup item on Startup and click Disable close Task Manager
5. Click "OK" on Startup tab of System Configuration Restart PC.
By doing so, your computer will be able to work normally again, and you'll see that no CMD window pops up anymore.
Hope it helps