How do I use the Registry Editor (regedit) to check for and potentially fix minor registry errors?

While directly editing the registry is risky, you can use it to check for obvious errors. Open regedit.exe. Look for entries with incorrect data types or missing values. *However*, only modify entries if you are absolutely certain of the correct values and have a backup. Incorrect changes can render your system unusable. Avoid deleting keys unless you know exactly what they do.