Let’s try to figure out what is going on.
- Did you recently apply Windows Updates?
- Have you checked Windows Defender or other security software for infections?
- Have you recently added any network or cloud backup or storage?
- What Windows Version are you running? )Settings, System, About)
Version?
Keep in mind some of the heat and slow speed may be due to OneDrive doing major syncing. For now, Exit OneDrive if you think that may be the case.
If you haven’t already, download the Update Assistant, and run it.