This forum is dedicated to basic help and support :
Ask here your questions about basic installation and usage of Mageia. For example you may post here all your questions about getting Mageia isos and installing it, configuring your printer, using your word processor etc.
Try to ask your questions in the right sub-forum with as much details as you can gather. the more precise the question will be, the more likely you are to get a useful answer
see if you can change your screen resolution and or set up the display for correct graphics card and or monitor. also, please advise both card and monitor.
edit: also, display manager, I see you are using Xfce DE.
could you also try a different Display manager and Desktop Environment.