8760w shuts off when plugged in

[zappazapper]

not getting any responses...  reposting...

my 8760w shuts off when plugged into the power adapter

by shut off i mean no proper windows shut down, just immediately OFF

it works fine off the battery

battery charges fine when computer is off

works fine plugged in when windows is booted into safe mode

i have cleaned the fan, the heatsink fins, removed the old thermal paste and pads from the CPU and GPU and replaced them...  running OCCT shows that heat is not an issue...  i can load both the CPU and GPU to 100% while running on battery power and temperature stays within acceptable levels (70-ish for the CPU and 50-ish for the GPU)...  OCCT doesn't seem to want to run in safe mode so there's no way to see if there's any difference when the power adapter is plugged in...  but plugging the power adapter in makes it shut off whatever the laptop is doing, it doesn't need to be running at high loads or doing anything else that would create heat for it to shut off...  in fact, if i try to boot the laptop with the adapter plugged in, it doesn't even make it to the login screen...

one thing i did try that seemed to work for a bit was booting into safe mode and disabling all the processor cores in device manager...  i was able to use the laptop plugged in for maybe a day like that and then the problem returned...  either way, that doesn't seem to be a long term solution to this problem...

any help would be appreciated, and if any more information is required i'm happy to provide it...

thanks,

chris

[WAWood]

@zappazapper 

If the PC works fine in SAFE mode, then the culprit is clearly SOMETHING that is getting loaded with Windows in normal mode -- and there is no simple way to determine what that it, whether it is a driver, or it is an app.

You said you disabled ALL of the processor cores, but if you actually did that, with no cores enabled, the processor could not possibly run -- so there must be something else at play.  My guess is that something managing the processor load is getting started which is corrupting the OS and causing the PC to shut down -- and, it could even be a driver.

You have to go through a long and tedious process of first, disabling all third-party drivers and apps, and them, re-enabling one at a time, rebooting your PC, and seeing if the problem returns. When it does, the last driver or app you re-enabled is the culprit.

There is no shortcut way to do this, sorry.