Laptop slows down when plugged in

[Zakii]

My laptop can run @ 2.20ghz without the charger plugged in but when I plug my charger to my laptop, it slows down to 0.79 ghz and it stays locked there dosen't go above or below it. 

Specs: 

Windows 10 pro,

i7-2670QM @ 2.20ghz, 

8 GB ram,

Nvidia geforce gt 630m,

BIOS Version/date : Insyde F.0A, 5/3/2012

BIOS Mode : Legacy 

Plz help ;-;

[asmita6658]

@Zakii

Greetings and Welcome to the HP Support Community. 

Don't worry, I'm here to help! To better assist you - Are you using the original adapter? 

Let's try these steps -

Step 1 Hard Reset -
1) Shutdown the computer. 
2) Unplug all the Adapter and peripherals connected. 
3) Remove the Battery. 
4) Press and hold down the power button for 15 to 20 seconds. 
5) Plug-in the Adapter and put the Battery back into the computer. 
6) Try to turn on the computer. 

Step 2 BIOS Defaults -
1) Shutdown the computer. 
2) Turn the computer back on again and repeatedly tap on the ESC until a Startup menu appears. 
3) Press F10 once for BIOS. 
4) Press F9 for BIOS defaults. 
5) Press F10 to save and exit. 

Also, try updating the computer -

Step 3 Windows Updates troubleshooter -

Click on this link to run Windows Updates troubleshooter.

Step 4 Windows Updates - 

1) In the search box, type and open Windows Updates. 
2) Check for updates. 
3) If the updates are available, click on install and restart the computer. 

Step 5 HP Support Assistant Updates - 

1) In the search box, type and open HP Support Assistant. 
2) Check for updates. 
3) If the updates are available, click on install and restart the computer. 

You may also refer to this document - HP PCs - Computer Is Slow

Hope this helps!

Let me know how that goes.

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Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

Have a great day ahead 🙂

[Zakii]

Thanks for the reply, Asmita!

I am using the original charger which comes with the laptop itself.

I've tried Windows update and the HP support Assistant but both had no impact on the cpu speed.

And does hard resetting and BIOS Default erase any data from the lapptop? I don't want my data to be erased!

[asmita6658]

@Zakii

Thanks for replying. No, the hard reset and BIOS defaults will not delete anything from your PC. 

Keep me posted. 

[Zakii]

Sorry for the late reply,

Well I tried both (hard reset and BIOS Defaults) and they both once again didn't change anything.

I researched about this problem and came to see this thing called Intel Turbo Boost and my i7 was compatible with it so would that fix the problem?

Thanks and regards.

[asmita6658]

@Zakii

To know more about the Turbo Boost Technology, refer to this document - HP Notebook PCs - Understanding Turbo Boost Technology

Thanks!