glitches with Windows 10 guest - black screen, garbled screen

Parallels 15.1.3
macOS 10.15.4
Windows 10 Pro


MacBook Pro mid 2014


When switching to full screen Windows 10 guest while Windows may have gone asleep, I'm getting a black screen which resurrects suddenly by getting half white with a noisy pattern nd then issues the Windows pause screen. Clicking on the arrow, Windos continues normally. It's just the black scsreen and garbled screen which I didn't see in earlier versions.

 

@ christophK2 Hi, it seems like frozen, please tried the instructions on this KB article https://kb.parallels.com/123094 in order to frozen restart the virtual machine. To avoid such issues in the future, we recommend disabling Windows fast startup feature by referring this link https://help.uaudio.com/hc/en-us/articles/213195423-How-To-Disable-Fast-Startup-in-Windows-10