After booting up Lifebook P770, at windows logon screen it gives a loud howling sound.
The sound can be heard in below shared file. https://we.tl/t-xI7Ds92Zl6
This issue only arises when the laptop has booted up to logon screen. Not at POST or after entering BIOS.
From what I can tell the CPU does not get hot.
Surely this must be a hardware problem but which hardware I wonder.
Anyone who knows and have a solution?
FYI the laptop has an SSD
Br / Tony