Hello NNVT, thanks for joining the Intel Graphics community.
I would like to inform you that we always recommend customer to install the drivers provided by the system manufacture since they customized the drivers. The installation of Intel Generic drivers may cause losing any customizations made by Medion.
Could you please attach the DX Diag report from your system? (Start -> Run -> dxdiag -> Save All Information).
And the system Information report: Click Start> Type System Information> Click File> Export> Save File> Attach using Advanced Editor Options.
When did you start getting this behavior?