No +VCORE in acer TravelMate TMP2510

[moscast]

Hi everyone
I have a problem with this laptop that won't turn on.
The +VCORE is not present and doing some measurements on the ISL95859 I notice this:

VIN present 19.5V
VCC present 5V
VR_ENABLE present 3.3V
PWM_A present 2.5V
FCCM_A not present
PWM1_B present 2.5V
PWM2_B present 2.5V
FCCM_B not present
PWM_C present 0.32V
FCCM_C present 5V

In these conditions should the ISL95859 works and therefore enable the FCCM_A and FCCM_B pins or do I have to check other lines for it to be enabled?
Maybe the ISL95859 is dead?
I add the very very similar schematic

Thank you

[yooolaaa]

Check the BIOS or if the CPU is damaged

[moscast]

Check the BIOS or if the CPU is damaged

Sorry, but when I power on it the enable are 3.3v and when a power off the enable is 0v.
I don't think the problem is bios and the cpu too becouse, vcore there isn't so the cpu not work

[yooolaaa]

Sorry, but when I power on it the enable are 3.3v and when a power off the enable is 0v.
I don't think the problem is bios and the cpu too becouse, vcore there isn't so the cpu not work

Whether vr ready is 3.3V, CPU damage may also cause no vcore

[mcplslg123]

1.8V rail is running?

[moscast]

1.8V rail is running?

hi, if you mean 1.8VSUS, yes it's present.
I add a photo about that.

[moscast]

Whether vr ready is 3.3V, CPU damage may also cause no vcore

Yes the VR_READY is present 3.3V

[moscast]

Someone can suggest me to try to replace ILS95859 or will it be useless?