processor speed stuck 0.40 ghz

[abhishek_kumar1]

my laptop speed gets stuck at 0.40 ghz whenever i plug charger but without charger it works smoothly i am facing this problem since my motherboard was replaced by hp please help i have done factory reset many times but it didnt worked now i am getting pissed off by this, please help 

[ub6424]

Hello @abhishek_kumar1 

Sorry to hear that you are having problems ... I would like to help you.

(1) Test your hardware Using the HP PC Hardware Diagnostics (UEFI)

--->>> Perform Component Tests ( AC Adapter / Battery )

https://support.hp.com/us-en/document/ish_2854458-2733239-16

See section <Running HP PC Hardware Diagnostics UEFI tests when Windows doesn't start>

See how it works:

https://www.youtube.com/watch?v=14GKIpGPNRM

(2) Please report your results ( error messages, take pictures )

( if serial number, device id, UUID, System Board CT Number is displayed, please blur )

[abhishek_kumar1]

The test says ac adapter is alright 

[ub6424]

Hello @abhishek_kumar1 

Sorry to hear that you are having problems ... I would like to help you.

Let me check your basic system configuration before we dive deeper ...

(1) Run    msinfo32

- Select <System Summary>:

--->>> Copy/screenshot/paste following key/value pairs:

OS Name

Version

System Model

System SKU ( equals HP product number (p/n) )

Processor

BIOS Version/Date

BaseBoard Product

BaseBoard Version

(2) Start Windows <Device Manager>

- Expand <Other devices> ? (Those entries are for hardware for which Windows has not loaded a suitable driver)

- Expand <Display adapters>

- Expand <Network adapters>

- Expand <Sound, video and game controllers>

--->>> Send screenshot

(3) Please report your results

[abhishek_kumar1]

[ub6424 · Accepted solution]

Hello @abhishek_kumar1 

My options are exhausted...

There is an error that cannot be detected by HP Diagnostics. Either the charger is unstable or the motherboard is not working correctly.

Recommendation and solution

HP warranty valid -> Contact HP Support for service repair

HP warranty expired:

You should have it serviced by a professional notebook (chip level) repair store.

Kind regards