Black screen when "upgrade" to 4GB guest RAM

OBollmann

Bit poster
Hi,

I just converted my Fusion VM (Windows 10) to Parallels 11. Everything is fine when my guest has got 2GB RAM. But as I configure the VM to use more RAM (4GB or 8GB) the VM starts only with a black screen. I can see the login screen for a very short time (round about half a second). Then the screen is black. When I reset the guest RAM to 2GB the VM starts normal again. My host has got 16GB RAM.

Any ideas?

Best regards,
Oliver Bollmann
 
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