Speed drops when plugged in. Laptop.

[Oh_Oops]

I have an old HP Pavilion Gaming Laptop 15-dk0xoox that slows down significantly when plugged in. It had windows on it when I got it, I tried everything I could think of.  No luck. So I installed Linux, same problem. I thought maybe it was the power supply, changed it... same problem. Does anyone have any idea what could be causing this? 

Getting a different computer is not a solution. This one will do it's job just fine if this problem is solved. No sense in wasting a new computer on a simple automation task. Note that the problem existed BEFORE I changed or installed anything. Also,  I got it from a pawn shop, so. . who knows what someone else did. 

[Deep_World]

Hi  @Oh_Oops,
 
Welcome to the HP Support Community!

Thanks for reaching out!

I  understand how  it must feel to see your laptop slow down when plugged in, especially since you’ve already tried different operating systems and even replaced the power supply. 
 

Could you please confirm the exact model number? 

Here are a few specific  steps you can try right away:

1. Check Power Plan Settings: In both Windows and Linux, laptops can throttle performance based on power profiles. Make sure the plan is set to “High Performance” or equivalent when plugged in.
2. Update BIOS and Drivers: Outdated firmware can cause odd behaviour with power management. Visit HP’s support website  https://support.hp.com/ for your exact model and install the latest BIOS and chipset drivers.
3. Hard Reset  : On HP laptops, a hard reset (holding the power button for ~15 seconds with AC and battery disconnected) can clear odd power states.
4. Also Kindly confirm if there was any hardware changes you have done on the computer or if the power adapter was replaced before. 

I hope this helps. 

[Oh_Oops]

It's can't be the power plan settings because: 

1. The power plan works in the inverse of the problem. 

2. Both operating systems do the same thing but do not have the same power management. 

3. I have tried every setting on windows and linux. (no coding, just the settings in the power management) 

I have not yet tried the reset.  That is next on the list.

I am using the power adapter that came with it, but I did try a different adapter. 

I replaced the burnt out plug inside the computer. (HP, please never use the tiny ID pin ever again in any product , ever) 

 

[Deep_World]

Hi @Oh_Oops,
 

Thanks for your response and I appreciate the detailed information you’ve already provided about your HP Pavilion Gaming 15-dk0056wm and the troubleshooting steps you’ve taken so far. 

Since you’ve already ruled out the power plan settings and tested across both Windows and Linux, as well as tried different adapters, the next step is indeed a system reset (Kindly ensure all the data is backed up before a full system reset). This can help eliminate any software-level conflicts that may be causing the issue.

Here are a few additional checks I’d recommendafter the reset:

1. BIOS update: Ensure your BIOS is up to date, as outdated firmware can cause power management inconsistencies.
2. Hardware diagnostics: Run HP’s built-in diagnostics (F2 during startup) to check for hardware faults.
3. Battery health check: Even if you’re using the adapter, a failing battery can sometimes interfere with power regulation.
4. Adapter pin inspection: Since you mentioned replacing the burnt-out plug, Could you please elaborate on this ?

I hope this helps.

[Oh_Oops]

It is taking quite a long time to back everything up. I have to make sure I don't loose anything important. 

I do not see how the problem could be software, since the operating systems do not use the same software at all, and the problem was present with both. 

Concerning the replacement of the power input port, I took out the old one and put in a replacement. As simply as unplugging the old one and plugging a new one in. I do not remember if I noticed the speed reduction before that time, since the internal part of the socket (where the adapter plugs into the laptop) was disintegrated almost entirely. This was due to the poorly designed plug. That tiny pin was broken by the previous owner. 

[Deep_World]

Hi @Oh_Oops,
 

Thanks for your response. 

From what you’ve described, the slowdown you’re experiencing may be related to the hardware changes around the power input port rather than the operating system or software. Since the original socket was damaged and replaced, it’s possible that the new port or its connection to the motherboard isn’t delivering stable power. When a laptop detects inconsistent or reduced power input, it can automatically throttle performance to protect components.

Since you’re in the middle of backing up important data, I recommend completing that process before running extended diagnostics or making further hardware changes. That way, your files remain safe regardless of the outcome.

If the port or motherboard connection is compromised, professional servicing may be required to restore full performance.

To ensure your device receives the appropriate care, we recommend visiting an authorized HP service center. Our certified technicians can provide a thorough diagnosis and offer the best solutions to address the issue.​

You can locate the nearest HP service center using our Service Center Locator:​

🔗 HP Service Center Locator

If you need further assistance or have any questions, please don't hesitate to contact us.​

Best Regards,

Deep_World