S2421HS, DP in port not working from HP laptop?

Hi,

I have a new S2421HS monitor. The HDMI port is working fine, but the DP (DisplayPort) will not work. I purchased this S2421HS to be able to connect the DP to my work HP laptop so to make working from home easier.

I have tried two different DP cables. Any suggestions on what I may be doing wrong, or does my S2421HS have a fault?

Best regards