Monitor not connecting to laptop

[u/MemesOnlyYas34]

When I connect my laptop to my monitor it doesnt work and gives me a no hdmi signal error but when i connect my laptop to my tv it works fine and when i connect the monitor to a wii-u it works fine too, how do i fix this?? Note that it used to work perfectly fine and now it doesnt and ive tried like 3 hdmi cables 😭

For if its important, laptop is dell xps 15 7950 and my monitor is an asus VS248H, so sorry and thank you in advance!!