Hp probook 4440s no power

[razu]

Hy all tech friend, I checked hp probook, its have 3/5volt, switch have 3.3 volt, but no power. rtcrst have 3.3 volt, I reflashed bios. but its cannot power on, what can I do now, which signal I check for ??????

[Techtiger]

Re: Hp probook 4440s no power

Check RSMRST high / low
EC RST
Power Button high / low
Test BIOS 3.3V

[razu]

Re: Hp probook 4440s no power

I found ec reset 3.3 volt, rsmrst 3.3 volt, bios have 3.3 but I found its physical damage, a registor is bad. Can any one have its board viewer, I found schematic........ if ec rst is missing sio is bad?????

[mcplslg123]

Re: Hp probook 4440s no power

If the resistor is near sio and connected to it, then just trace the pin number of sio. Rest you can follow the schematic to find out its value.

[razu]

Re: Hp probook 4440s no power

its not sio registor , its under the pch chips. I need board viewer...