Question Not getting any display most of the time ?

Jan 28, 2023
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I just built a last gen pc for a friend of mine, but for some reason it doesn't give a display on my monitor most of the time.

I know for a fact it's not the monitor, because I've tried a TV, an old monitor, and a new monitor. I also know it's not the graphics card, because it has the same issue with its integrated graphics. I'm not entirely ruling out the ram, but I have tried 2 types of ram already.

All of the components are new, besides the graphics card.

Specs:
i5-3470
Radeon R7 250 2GB
16GB DDR3 RAM
550 watt psu 80 plus bronze
Micro atx board.

Please help, I've spent all day trying to get this to work.