How can I stop my monitor from duplicating screens ?

Hi everyone.

Thanks for helping me.

I have a Lenovo P40 Yoga, and it runs Solidworks very well. But as soon as I put an HDMI cable in order to expand my display to my monitor-free (ACER), it becomes horrible !

When I click, it multiplies windows ! That's funny but I can't work tho.

The only solution is to duplicate my original screen (from the P40Yoga) ! I can't expand it and work like a pro B-(

My monitor works very good with the Adobe products or anything else. The only problem is SW.

Can you guys help ?

Thanks :-)

SolidworksGeneral