Acer Laptop Power On Sequence

Are you having trouble turning on your Acer laptop? Does it seem like it’s not getting power no matter how many times you press the power button? If so, you’re not alone.

A lot of people have been experiencing this problem with their Acer laptops. In this blog post, we’ll walk you through the power on sequence so that you can turn your laptop on properly.

Keep in mind that if your laptop is still under warranty, you should contact Acer support to see if they can help.

Let’s get to it.


Connecting AirPods to an Acer laptop [Chromebook] is easy. Just Connect AirPods to Acer and follow the instructions to pair them with your device.

What Is Power On Sequence On Acer Laptop?

A laptop’s power sequence is the order in which its various components are powered on. This is important because some components can’t be powered on until others are already up and running.

For example, the processor must be up and running before the hard drive can be accessed. Similarly, the display must be operational before any output can be sent to it.

If the power sequence is not followed, components can end up damaged or not working at all. In some cases, following the proper power sequence can also help improve system stability and performance.

Importance Of Power On Sequence On Acer Laptop

So, why is the power sequence important on Acer laptops? Because it helps ensure that all of the components are powered on in the correct order, and that they’re all compatible with each other.


To access the Boot Menu in an Acer Nitro 5, click on the Acer Nitro 5 Boot Menu link for detailed instructions.

When everything is working together correctly, your laptop will function at its best.

If you’re having trouble with your Acer laptop, following the proper power sequence may help you get it up and running again.

If you’re not sure what the correct power sequence is, consult your owner’s manual or contact Acer customer support.

Power Stages For Acer Laptop

Mechanical off – When adapter and battery not connected but only internal CMOS battery is connected.

Power off (Soft OFF) – Before pressing power on button, the adapter or battery will be connected and power supply will go inside.

Standby mode – After pressing on/off, the first standby volt will be on.

Power on mode power – When in running condition all powers on Lcd, keyboard etc.

Hibernate mode – When your acer laptop goes into hibernation, all power will be closed, power comes on when you press the power button.

Sleep mode – Sleep/standby requires you to press the power button to start.

When required power – Some devices when enabled then their power will be on. These are referring to the camera, Wi-Fi, Bluetooth etc.

How Motherboard Start On Acer Laptop

Here’s how:

  1. Before adapter/ battery power CMOS battery will give power to RTC Crystal.
  2. Main vin/pwrsrc voltage generated from adapter or battery.
  3. Primary Always and AUX power generated from main power.
  4. All standby voltage generated from main voltage.
  5. All main running voltage start.
  6. Clock Vrm section section power supply start.
  7. Clock generator chip will get enable signal and start giving frequency.
  8. Power good signal to.
  9. South bridge supply PCI_RST / PLT_RST to north bridge, and other chip.
  10. North bridge send CPURST/HRESET host reset signals to cpu.
  11. After reset bios will read device.
  12. After bios test is complete, it shifts to MBR of hard disk.

Different Stages Of Power Identify On Acer Laptop

Mechanical OFF3.3vRTC
Power off stage power3V PCU/ ALW/S5/AUX 5V PCU/ALW/S5/AUX 1.8V
Standby stage power3V SUS / S3 5V SUSU / S3 2.5V SUS/ S3 1.5V SUS/ S3
On stage power3V/5V PCU/S5 3V/5V SUS/S3 3V/5V MAIN/S0
Hibernate stage power3V PCU/ ALW/S5 5V PCU/ALW/S5 1.8V
When required power3V CAM 3V WIFI
Sleep mode 

Acer Laptop Motherboard Power On Stage And Different Power

MECHANICAL OFF STAGE 3Out side laptop no power connected only internal CMOS battery connectedCMOS battery give powerRTC(real time clock, crystal) iOSs, chip, south bridge some portion getting power, RTC CMOS is connected 3.3VRTC
POWER OFF/STANDBY STAGE S5 – 52 – PCU / S5/ALW/AUXBattery or adapter connected to laptop but not power onAdapter VIN+PWR SRC PCU/S5/VIN Power always onOn/off switch RTC/BIOS CMOS battery power ic discharge sectionI/0 power lan south bridge all regulator chip mosfet all high mosfet charging batteryAdapter VIN+PWR SRC 5V 3V 1.8v PCU/S5/ALW/AUX
SUSPEND STAGE S3 – G1 SUS/S3First it will go to suspend stage then on stage & when shut down to suspend stageSUS/S3/sustainOn/off switch USB lan bios battery crystalTouchpad keyboard northbridge ram3v sus/s3 5V SUS/S3 2.5V SUS/S3 1.8/1.5DDR
ON STAGE S0 – G0 SO/RUN/MAINAfter complete on lcd on all working okS0/5V/ON STAGE MAINOn stage get power dual also 3V/5V PCU/S0 3V/5V SUS/S3 3V/5V MAIN/S5
HYBERBATE STAGE S4 – G1When on and we keep on hibernate stageOFF STANDING RAM DATA STORE IN HARG DISKAll power closed and power off stage power only running data store in hard disk as image laptop goes shut down 5V PCU/S5/ALW 3V PCU/S5/ALW 1.8V
WHEN REQUIREDWhen enable particular device its power will on5V VCAM, 5V WIFIETCBluetooth, Wi-Fi, camera when enable power supply on 5V Wi-Fi 5V CAM


As you can see, the power-on sequence for an Acer laptop is a very important process that helps to ensure your device starts up correctly.

If you ever experience problems with your laptop starting up, it may be helpful to know the different stages of power identity and what could be causing the issue.

I hope this article was helpful and provided some useful information about how an Acer laptop starts up.

If you have any questions or challenges related to this topic, please let me know in the comments section below.

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Solomon Omolabi is a seasoned IT professional with 10 years of industry expertise. As the owner of, he provides meticulously researched and comprehensive articles that effortlessly tackle any technical challenge. Solomon's contributions have earned him recognition on esteemed professional platforms, making him a trusted authority in resolving complex IT issues. Read more.

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