Issues with Safe Mode lead to permanent black screen

Hello, I would really appreciate help in solving this issue. I wanted to get rid of Sandboxie because the latest Win10 update requested it. So, after failing to do so via regular uninstall route, I tried to boot in safe mode via Troubleshoot and restart. It produced lingering black screen, but on hard restart it would boot into normal mode welcome screen . Then, I, foolishly so it seems went In the System Configuration window, clicked on the Boot tab. In the Boot options section, selected the "Safe boot" option and after the final restart NOW all I get is black screen, no booting circle, no logo, just led power on indicator and other blinking normally on the PC case. Also keyboard function is there, I can turn on and off caps and num lock lights.


Thanks very much in advance if you have an idea how to fix this...

Boot computer into Windows Recovery Environment and open Command Prompt execute following command.

Code:

bcdedit /deletevalue {current} safeboot

I have batch script for enabling Windows Installer service in Safe Mode to uninstall Apps.

Code:

::  Enable Windows Installer in Safe Mode To Remove Apps

@Echo Off 


Cls & Mode CON  LINES=11 COLS=80 & Color 0E & Title Created By FreeBooter
Echo.
Echo.
Echo.
Echo.
Echo           Do You Want to Enable Windows Installer in Safe Mode (Y/N)?   
Echo.       
Echo.
Echo.


Set /p input= RESPONSE: 

If /i  Not %input%==Y (Goto :_Ex) Else (Goto :_Start) 

:_Ex
If /i Not %input%==N  (Goto :EOF) Else (Goto :_RegRestore)



:_Start

Reg.exe add "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\MSIServer" /ve /t REG_SZ /d "Service" /f
Reg.exe add "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\MSIServer" /ve /t REG_SZ /d "Service" /f

net start msiserver 




Cls & Mode CON  LINES=11 COLS=65 & Color 0E & Title Created By FreeBooter
Echo.
Echo.
Echo.
Echo.
Echo            Enabling Windows Installer in Safe Mode
Echo.
Echo.
Echo. 
Ping -n 6 localhost >Nul



:_RegRestore

Reg.exe delete "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Network\MSIServer" /f
Reg.exe delete "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal\MSIServer" /f



Cls & Mode CON  LINES=11 COLS=65 & Color 0E & Title Created By FreeBooter
Echo.
Echo.
Echo.
Echo.
Echo            Disabling Windows Installer in Safe Mode
Echo.
Echo.
Echo. 
Ping -n 6 localhost >Nul

Thanks for the reply, but I can not exit black screen in any way...How can I enter a console when I can't see anything... I even tried entering Asus bios, but F2 and Del keys dont do anything...Perhaps the keys are missing window of opportunity on a usb keyboard... Btw, the computer will even go into sleep mode and wake up after some hours with a regular mouse movement....
Dang, RIP my work for the next week

Have you executed command from Windows Recovery Environment?

I have no access to console. I push the power on button and all I get is black screen... But mouse and keyboard are powered

If you can't access BIOS setup utility then problem is faulty hardware not caused by Windows 10.

dalchina said:

That should let you boot normally again: just wondering, how did you think booting to Safe Mode would help you with uninstalling Sandboxie?

By default, installing and uninstalling in Safe Mode is not supported. Perhaps you're aware of this and have or were intending to do the modifcation to enable this - e.g.
Tip: How to install and uninstall a program in Safe Mode – 4sysops

When you tried to uninstall it, what happened?
Very occasionally it's necessary to reinstall a damaged program to uninstall it.
Otherwiser try Revo or Geek uninstaller which 1st run the normal uninstaller, then scan for leftovers.

I read somewhere that you can remove anything in Safe Mode that is not Windows issued... I say in the OP, I never even reached Safe Mode, it was black screen even from the Troubleshooter.
I get a feeling perhaps this is causing my display adapter to send picture to a different non existant screen... maybe....
Anyways, it simply is stuck on black...

Can you boot your computer with Windows Installation Media?

Boot your computer and force shutdown your computer few times to make Windows 10 boot to Windows Recovery Environment.