TL;DR: Microsoft has now officially ended Windows 10 support, but if you were hoping to upgrade to Windows 11 using the Media Creation Tool, you can't - as the latest version is bugged and broken.
HWiNFO (Hardware Information) is a free, professional tool for Windows PCs. You can think of it as an all-in-one system ...
But Reliability Monitor is a good starting point that can be used in conjunction with other built-in Windows diagnostic tools ...