khuzema_par
Newbie level 4
i have compaq m2000 laptop no power
i check stanby voltage is ok
power switch volt is ok
but not on
i check stanby voltage is ok
power switch volt is ok
but not on
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i have compaq m2000 laptop no power
i check stanby voltage is ok
power switch volt is ok
but not on
The motherboard power-up sequence is non BIOS/CPU function! No BIOS need for power on. The BIOS contains chipset initial codes(bridges,vga,usb...) and low level functions. For example INT21 routines.
When you press the power button, the signal is connected to power management IC's. Not to CPU.
After the power up, the CPU controls the power trough ACPI.