A4-H2O (13700K) freezing randomly after upgrading 7900 XT → RTX 5080 — even freezes in Windows Recovery
Existing build, just swapped my 7900 XT for a 5080 and did a fresh Win11 install. Since the swap, the system freezes randomly — Windows loading screen, even sitting idle at a command prompt in WinRE. One generic BSOD, missed the stop code.
Already done: chkdsk clean, sfc clean, XMP off (froze at 6400), VMD/CSM off, capped PCIe to Gen 4 for the stock riser.
Then I noticed the case was sitting on top of the open power cables. Plan is to reseat everything (12V-2x6, riser both ends, 24-pin, EPS, RAM) and reroute.
Does this sound like riser/cable stress, or should I be looking at MemTest86 / the PSU? Anyone running a 5080 on the stock A4-H2O riser?