840 G4 if shutdown does not start until cmos reset

[medinfo]

HP ELitebook 840 G4, if shutdown does not start, until cmos reset or with key WIN+B, when restart it start normaly but if shutdown does not start.

- power button working
- Bios updated to latest
- CMOS Battery changed
- Battery charged

[mcplslg123]

Re: 840 G4 if shutdown does not start until cmos reset

Check RTC circuit like RTCRST#/SRTCrst#/INTRUDER# etc.

[medinfo]

Re: 840 G4 if shutdown does not start until cmos reset

Schematic not found for this motherboard .