Removing those 4 files did the trick for me as well, but not before it claimed a song id been working on.
One thing i noticed too these files were all 32bit, and i.e. noticed 64 bit version of cubase does not play nice with 32 bit applications, wonder if there is a connection there
the eratic CPU might be signs of other issues other then Cubase, anything thing i did and didn’t mention I saw on another thread is removing all video drivers using …
Download the latest driver as well and install them after you remove all the current video driver.
also run a malware scan as that will cause troubles as well.
All have made my system dead solid.
Cubase is a picky SOB
Also I’ve never gotten Cubase to work well on a Laptop.