My computer screen turns black every time i log into my Windows acc

Troubleshooting Black Screen and System Errors During Windows Login

Experiencing technical issues during the Windows login process can be both frustrating and disorienting. One common problem users encounter involves the screen turning black immediately after logging in, accompanied by system error messages. In this article, we will explore a specific scenario where this occurs and provide steps to diagnose and resolve the underlying issues.

Understanding the Scenario

A user reports that upon logging into their Windows account, they receive an error message related to taskhost.exe, stating:

“taskhost.exe – System Error: Exception processing message – unexpected parameters.”

Following this message, the screen turns black, leaving the user unable to perform any actions besides pressing Windows+L to lock the screen and return to the login interface. Occasionally, another message pops up referring to ctfmon.exe, which is associated with language bar and input services.

Potential Causes

Several factors could contribute to this issue, including:

Corrupted system files or system registry issues
Faulty or incompatible startup programs or services
Malware or malicious processes
Problems with user profile or Windows updates
Hardware conflicts or failures

Step-by-Step Troubleshooting Guide

Boot into Safe Mode

Starting Windows in Safe Mode allows you to run diagnostics and repairs without interference from third-party software.

Restart your computer.
During startup, press repeatedly the F8 key (or Shift + F8 on some systems) before the Windows logo appears.
Select Safe Mode with Networking from the menu.
If you cannot access Safe Mode normally, try booting via the Windows Recovery Environment:
Interrupt the boot process three times consecutively to trigger automatic repair.
Navigate to Advanced options > Startup Settings and choose Enable Safe Mode.
Check for Malware