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Hardware diagnostic tools are sometimes flagged as "potentially unwanted programs" (PUPs). Check your antivirus quarantine folder. If you find the file there, mark it as an exception and restore it. Manual Placement (Last Resort)

If you have a backup of the file from a known clean system, you can restore it to the correct folder, but always verify the digital signature:

Note: Never download DLLs from "DLL Fixer" websites, as they often contain malware or outdated versions. 4. Check Antivirus Logs