Stuck at the Windows login screen? Don't panic! It's a common issue, and often easily fixed. First, double-check that Caps Lock and Num Lock aren't accidentally enabled. A simple typo is a frequent culprit.
If that doesn't work, try restarting your computer. Sometimes a temporary glitch can prevent a successful login. If you use a Microsoft account, ensure you have a stable internet connection. Problems connecting to Microsoft's servers can cause login failures.
Forgot your password? Click the "I forgot my password" link on the login screen and follow the instructions to reset it.
For local accounts, and if you've tried everything else, you might need to use System Restore or boot into Safe Mode to diagnose and resolve the problem. If you're still locked out after trying these steps, consider seeking help from a tech-savvy friend or professional.