Question Why did my monitor get no display signal

Sep 30, 2020
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Some time graphics card working great.....but sometime pc starts but no display signal... VGA cable to GPU there is no signal on my monitor....but when I plug VGA to the motherboard it works fine.
My pc configuration -
Intel Core i3-8100
Gpu- Zotac 1050ti mini 4GB DDR5
motherboard-asrock h310