Solved! Stuck at 60 Hz

Jun 30, 2019
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I recently bought Alienware AW2518HF which is a 240Hz monitor. I connected it to a laptop Lenovo Legion Y520 through HDMI cable 2.0. I did some research and the monitor has HDMI 2.0 port and the laptop has only 1.4 HDMI port. This should allow me to run at least 144 hz. When I try to change the refresh rate in windows or in Nvidia Control Panel it only allow me to put it in 60 Hz. Any ideas?
 
Solution
Install latest drivers from the Lenovo support homepage
Amd and Intel gpu drivers from there

Update to the latest bios version as well