My monitor is a "Acer Nitro VG240Ybmiix" and it has built in speakers and 2 jack ports, i tried both of them and none of them work, but when i connected my monitor with my laptop through a HDMI cable the sound on my monitor worked perfectly. The monitor is connected with my PC from the monitors HDMI port with a HDMI cable that is connect to HDMI to DVI adapter that is then connected to my GPU's DVI port, because my HDMI port on my GPU is not working, and the second cable is the aux cable for sound, but my monitor still then doesn't give any sound. Its showing that there is sound but i can't hear anything.