Monitor turning off randomly for some seconds

[gadondorf]

UH75_U28H75xUQ (HDMI2) i plug there my monitor to Alienware cpu vmi cable and i have a 59 w cable ac/dc adapter model A5919_kpnl to an outlet (since i live in Argentina) it says it supports even undesired operation vmi cable it's new i bought it before yesterday since it did the same with my hdmi cables that it came with. this has had happened since i ever got the monitor it shows sometimes a horizontal line in white or image going like purple diagonal way like it shows as a blink way and then it turns off. and later turns back on all this lasts seconds. if anyone knows how to fix it please let me know so far im kinda avoiding it to not be constantly but it's a temporal solution the monitor is samsung of course and since there was no option for monitors i post it here