How to turn on an HP laptop without a power button: from the keyboard to directly starting the motherboard

Broken power button on laptop HP - one of the most annoying breakdowns that can completely paralyze the operation of the device. It’s especially unpleasant when this happens in the midst of an important project or before submitting a report. Many users mistakenly believe that it is impossible to turn on the laptop without physically pressing a button, and immediately take it to a service center. In fact there is at least 7 alternative ways launch HP Pavilion, EliteBook, Omen or Envy - from simple key combinations to direct manipulations with the motherboard.

In this article we will analyze all available methods - from the safest (for example, turning on via a charger) to emergency (directly closing the contacts). You will learn which methods are suitable for laptops with removable battery, and which ones are for models with a soldered battery (HP Spectre x360, Dragonfly). We'll also explain why some methods may not work on new devices with UEFI instead of classic BIOS, and what to do in such cases. If your laptop HP does not respond to the power button, but is charging (the indicator is on) - the chances of a successful start without disassembly are more than 80%.

1. Turn on the HP laptop via the charger (plug-in method)

The easiest and safest way is to use the power supply features HP. Many models (especially business lines EliteBook And ProBook) support the function automatic switching on when power is connected. This works even if the battery is completely dead or missing.

To use this method:

• 🔌 Disconnect the charger from the laptop (if it was connected).
• 🔄 Remove the battery (if it is removable - in models HP 250 G7, 255 G8 and similar).
• ⚡ Connect the charger to the laptop and straight to the outlet (important: first to the laptop, then to the network!).
• ⏳ Wait 10-30 seconds - some models turn on automatically.

If the laptop does not respond, try repeating the procedure 2-3 times. On models with Fast Charge (For example, HP Omen 15) this method works in 60% of cases. If you have a laptop with a non-removable battery (HP Spectre, Envy x360), proceed to the next method.

2. Using the keyboard: hidden combinations to enable

Some laptops HP (especially those released before 2018) support hardware key combinations, which can simulate pressing the power button. This method works at the keyboard controller level, so it does not depend on the state of the operating system.

Try the following combinations (hold for 5-10 seconds):

• 🔑 Fn + Esc - triggers on HP 650 G1, 840 G3 and the like.
• 🔑 Win + B (hold for 15 seconds) - works on some Pavilion 15 episodes.
• 🔑 Ctrl + Alt + Del (only if the laptop was in sleep mode and not turned off).
• 🔑 Power + Volume Up (on hybrid models HP x360 with touch screen).

If the combinations do not work, do not despair: modern models (HP Dragonfly, EliteBook 800 G8) often block such functions for security reasons. In this case, proceed to the following methods.

3. Reset BIOS/UEFI: Force startup via hard reset

If laptop HP does not turn on due to a software failure (for example, after an unsuccessful BIOS update), you can try hard reset. This method works even if the screen does not respond, since manipulations occur at the chip level.

Instructions for most models:

1. Unplug the charger and remove the battery (if possible).
2. Hold the power button 30–40 seconds - this will discharge the residual charge of the capacitors.
3. Connect the charger (do not insert the battery!).
4. Press and hold Win + B (or Fn + Esc for older models) for 10 seconds.
5. Release the keys and wait 1-2 minutes - the laptop should turn on in BIOS recovery mode.

On models with non-removable battery (For example, HP Spectre Folio) instead of removing the battery, you can use the "deep discharge method":

Hold the power button for 60 seconds|Disconnect the charger|Wait 5 minutes|Connect the charger and try to turn it on-->

⚠️ Attention: On laptops with TPM chip (For example, HP EliteBook 840 G6) Hard BIOS reset may cause the device to be blocked by the request BitLocker key. If you do not know this key, it is better not to use the method.

4. Direct short circuit of the power button contacts (for advanced users)

If all program methods have been exhausted, all that remains is mechanical contact closure on the motherboard. This method requires disassembling the laptop, but has 100% efficiency, if the problem is in the button (and not in the power board).

Step by step instructions:

1. Turn off the power and remove the battery (if it is removable).
2. Remove the bottom cover of the laptop (on most HP it is secured with 8–12 screws Phillips #0).
3. Locate the power button connector on the motherboard - it is usually small 2-pin connector with inscription PWR_SW, Power BTN or similar.
4. Carefully disconnect the button cable and close the contacts on the board with a screwdriver or tweezers for 1–2 seconds.

📌 Where to look for contacts:

Laptop model	Contact location	Notes
HP Pavilion 15	Near the battery connector, under the keyboard	Often covered with black tape
HP EliteBook 840	Under the upper left corner of the touchpad	Connector JPower white
HP Omen 15	Under the video card, next to the cooler	Cooling system needs to be removed
HP Spectre x360	Under the battery (non-removable)	You need to carefully lift the board

⚠️ Attention: Do not close the contacts with metal objects for more than 3 seconds - this may damage the power controller. If after a short circuit the laptop does not turn on, but the charging indicator is on, the problem may be EC controller (service diagnostics required).

What should I do if after a short circuit the laptop turns on, but immediately turns off?

This indicates a fault in the power circuit. Possible reasons:

1. Short circuit in USB ports (try disconnecting all devices).

2. Operating system malfunction (requires BIOS reset or Windows reinstallation).

3. Damage VRM module on the motherboard (soldering required).

5. Power on via docking station or USB-C (for modern models)

Laptops HP latest generations (2020 and newer) are often supported enable via ports USB-C/Thunderbolt. This is related to the function Power Delivery, which allows the transmission of power and control signals.

How it works:

• 🔌 Connect your laptop to HP docking stations (For example, HP Thunderbolt Dock 120W G2) or charger with USB-C PD (with a power of at least 65W).
• 🔄 On some models (HP Elite Dragonfly, Spectre x360 13) just connect the charger and the device will turn on automatically.
• 🖥️ If you have an external monitor connected via USB-C, try pressing its power button - this may initiate the laptop to start.

This method is especially relevant for ultrabooks HP, where the traditional power button is replaced by a touch one (HP Elite Folio). If your laptop supports Modern Standby (always-on mode), it can wake up from a signal from the docking station even without pressing a button.

6. Alternative methods: from network card to CMOS battery

If standard methods do not help, you can try less obvious options. They take more time, but sometimes they save you in hopeless situations.

Method 1: Wake-on-LAN (for enterprise models)

Laptops HP EliteBook And ProBook often support technology Wake-on-LAN, which allows you to turn on the device over the network. To do this:

1. Connect your laptop to the router via Ethernet (or make sure it's connected to Wi-Fi with WoWLAN).
2. From another device on the same network, send "Magic Packet" (you can use the utility WakeOnLan or online service).
3. The laptop should turn on if the feature has been enabled in the BIOS (Advanced → Power Management).

Method 2: Removing the CMOS battery

On older models (HP 6560b, 8460p) you can reset the BIOS settings by temporarily deleting CMOS battery (tablet CR2032). After this, the laptop can turn on automatically when power is connected. However, on new devices this method is often blocked by security TPM.

Method 3: Using a bootable USB drive

If the laptop responds to the charging connection (the indicator is on), but does not turn on, try:

• 🔧 Create a bootable USB flash drive with Hiren’s BootCD or Ultimate Boot CD.
• 🔌 Connect it to your laptop before power is applied.
• ⚡ Connect the charger - some models will automatically start when bootable media is detected.

7. When all else fails: diagnosis and repair

If none of the above methods worked, the problem most likely lies in hardware failure. Here are the most common causes and their symptoms:

Symptom	Possible reason	Solution
The charging indicator does not light up	Malfunction of the power supply or controller EC	Check with a multimeter, replace the power supply
The indicator is on, but the laptop does not turn on	Short circuit on the motherboard	Diagnostics in the service, resoldering of elements
Laptop turns on and then turns off immediately	RAM or CPU failure	Reinstalling memory modules, testing with POST codes
The cooler is spinning, but there is no image	Problems with the video card or BIOS	BIOS reset, chip flashing

⚠️ Attention: If your laptop HP got under guarantee, do not disassemble it yourself - this will void the warranty. In this case, contact an authorized service center HP indicating the error code (if it is displayed on the screen). For models older than 3 years, repairing the power button costs 1500–3000 rubles (depending on the complexity of disassembly).

FAQ: Frequently asked questions about turning on an HP laptop without a button

My HP Pavilion laptop does not turn on even after closing the contacts. What to do?

If contact closure PWR_SW did not work, the problem may be:

• Malfunctions EC controller (firmware or chip replacement required).
• Short circuit in the power circuit (diagnosis with a multimeter is required).
• Damage BIOS chip (in this case, the laptop may show signs of life - for example, spinning the cooler, but not displaying an image).

In such cases, it is recommended to contact the service, since independent repairs may aggravate the problem.

Can I turn on my HP laptop via HDMI or another port?

No, ports HDMI, USB-A or DisplayPort are not intended to transmit a turn-on signal. The only ports that can theoretically run a laptop are USB-C/Thunderbolt with support Power Delivery (on 2019 and newer models) or Ethernet (via Wake-on-LAN, if the function is enabled in the BIOS).

After resetting the BIOS, the laptop requires a password. What to do?

This is standard protection on business models HP EliteBook/ProBook. The password can be:

• Installed by you earlier (try to remember or find it in the documents).
• Corporate (if the laptop was issued by the employer, contact the IT department).
• Generated by the system (in this case, only a reset via HP BIOS Configuration Utility in the service).

⚠️ Do not try to guess the password - after 3 unsuccessful attempts, the laptop may be blocked forever.

How to turn on an HP laptop if it has gone into “eternal sleep” (black screen, but the cooler is working)?

This is a typical symptom hibernation failure or file corruption hiberfil.sys. Try:

1. Hold the power button for 20-30 seconds to force shutdown.
2. Disconnect the charger and battery, wait 5 minutes.
3. Connect the charger and try to turn on the laptop in the standard way.
4. If that doesn't help, create a bootable USB flash drive with Windows PE and manually delete the file hiberfil.sys from the system disk.

Is it possible to turn on an HP laptop without disassembling it if the button has physically fallen off?

Yes, it will help in this case mechanical pressing of the microswitch under the key. Gently press down on the area where the button was with a thin, non-metallic object (such as a plastic card or toothpick). If the microswitch is intact, the laptop will turn on. For a permanent solution, you need to glue the button back or replace it with a new one (the cost of the part is from 200 rubles).