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Folio 9470m won't stay on- even in BIOS.

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Folio 9470m

I'm seeking help for a dodgy Folio 9470m that I inheirited. It came with stability problems (not staying powered, crashing, etc) so I reinstalled Windows 10 onto it. This took several tries, as the computer would often power down into a "deep sleep" during installation, or even in BIOS before installation. Occasionally, it would also boot loop for several minutes. It successfully boots to OS about half the time now without boot looping, but will not stay on for more than a few minutes.

What I've tried:

BIOS update: Updated to a bios from a few years back as the new one wouldn't update, then updated to latest. No change.
Power: Tried powering from just charger, just battery, and both. No change.
Cleared fan: Fan was completely blocked by tape from manufacturing (internally, between fan and heatsink) (not a good sign as it was refurb). No change.
Reseated ram: No change.
Reseated CMOS bat: No change.
Installed Linux instead: No change.
Powered with system off, battery out for 1h: No change.

Currently thinking about just buying a new MOBO and installing, any suggestions before I do that?


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