The issue you're facing with programs not running, error messages, and Task Manager not opening could be due to various reasons. Here are some steps you can follow to troubleshoot and resolve the problem: 1. Boot into Safe Mode: - Restart your computer and press F8 before Windows starts loading to access the boot options. - Choose "Safe Mode" to start Windows in a basic state, which can help isolate any software-related issues. 2. Check for Disk Errors: - Run a disk check to ensure that there are no errors on your hard drive causing the slowdown. - Open a Command Prompt as an administrator and run the command: chkdsk /f /r 3. Perform a System Restore: - If the issue started recently, use System Restore to...