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- HP 6305 SFF will not startup, pwr on, fans running no boot o...

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12-04-2024 06:26 AM
hp 6395 running alma9 linux, no startup, no beeps, no post no boot, no display, power on after 45 seconds cpu fan races, pwr supply good, it will randomly startup after off for days and will work fine. then upon a reboot will not start again from warm start or cold start. cannot get to f2 or f10/f11
removed all external device connections and memory, same no start. used a PCI post diag card to get error codes, card shows pwr ok , upon start displays code of 5E5D - code not listed anywhere. want to find this problem as it seems this is a hp problem as many have this same issue. also changed BIOs battery and reset, same no start.
seems like as it trys to start initial checks are failing - would like to know hp's startup code flow.
any help would be much appreciated - I don't want to just start shotgunning parts
Scott