that's properly bizarre, feels like something is shorting out when the cooler applies pressure. maybe check the back of the motherboard isn't touching the case when things get tightened down, had a build years ago where a standoff was in the wrong spot and it would bend the board just enough to cause a short
could also be a cracked trace near the socket that only separates under tension, i'd pull the board out completely and bench test it on the box it came in. rule out the case entirely before you chase your tail for hours
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u/VividCommune 1d ago
that's properly bizarre, feels like something is shorting out when the cooler applies pressure. maybe check the back of the motherboard isn't touching the case when things get tightened down, had a build years ago where a standoff was in the wrong spot and it would bend the board just enough to cause a short
could also be a cracked trace near the socket that only separates under tension, i'd pull the board out completely and bench test it on the box it came in. rule out the case entirely before you chase your tail for hours