We all have been there and we all have been disappointed by it. Most of the time when I encounter a system with OS related problems I still run sfc but only for the logs and not in the hope that it dose anything useful by itself or the accompanying commands. After that it’s most of the time OS refresh or full wipe depending on the problem and state of backups. Good thing SFC takes now days only a minute or less with M.2 NVME SSD.