How can I troubleshoot an 'unknown error' message on my PC?

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Grade: Education Subject: Support
How can I troubleshoot an 'unknown error' message on my PC?
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Troubleshooting starts with basic steps like restarting your computer. If that doesn't work, check for outdated drivers, run a virus and malware scan, check disk space, and consider running the system file checker (SFC) to repair corrupted files. If the problem persists, a system restore or reinstall might be necessary.