B40-30 screen fades on W10 when the power cable is plugged

Hi all!
Couple B40-30 weeks bought it y a. upgrade to Windows Home 64-bit 10, then did a clean install of W10. Installed all the drivers required from the Lenovo site.
After that (I don't remember what it was like before the clean install) I faced the problem: when I plug in the adapter the screen turns black (gray). When I unplug the cable screens becomes visible. Laptop is not actually usable while it is on the power grid.
I suspect that there is something wrong with the power management settings.
Any help would be kindly apreciated!

Thanks in advance!

Well, updated the BIOS. Problem ended. However - Thanks for the help and good luck!

Tags: Lenovo Notebooks

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