Windows black screen & Sihost.exe errors - help

[Frank M]

I have a black screen & Sihost.exe unknown error. I am able to get the laptop in safe mode, but am not able to use the windows key, search bar or get to the internet. 

Any suggestions?

[Steve K.]

Have you adjusted your resolution? I think first step is to resolve your black screen. Try to restore from a previous system restore would be my first piece of advice.

 

https://www.groovypost.com/howto/windows-10-enable-create-system-restore/

[Jimm_Wick]

After investigating this particular issue thoroughly, it turns out that there are several different scenarios that might be contributing to the apparition of this error code. Here’s a short list of scenarios that might spawn this error:

Outdated Windows 10 build – According to a lot of affected users, this issue can also be caused by a bad update that only affects Windows 10 installations resulted after an upgrade from Windows 8.1. In this case, the only fix is to install the hotfix for this issue by installing every pending update via Windows Update.
Corrupted System Files – System File corruption can also be responsible for the apparition of this error code. If you’re dealing with some kind of corruption that’s affecting the startup procedure, running SFC and DISM scans should allow you to identify and fix the problem.
Unidentified File Conflict – As it turns out, you can also expect to deal with this issue in instances where you’re experiencing a conflict between a 3rd party driver or program and a system component. If you can’t identify the conflict, the easiest way of fixing the problem is to use the System Restore utility to revert your computer back to a healthy state.
Corrupted OS Installation – Under more serious circumstances, you should expect to see this error in a situation where you’re dealing with corruption that’s affecting critical OS files that are used during the startup sequence. In this case, your only hope at fixing the issue without clean installing is to go for a repair install (in-place repair).