Windows 10: Need help for CMOS Reset 502 error

I am using up 15 da series laptop i3 7th generation , and yesterday suddenly laptop shuts down after clicking on power button for long time laptop starts with 502 errors and laptop reboot after pressing enterI have tried to restore bios default settings but same issue now what to do?

:)

 

CMOS Reset (502) + No Wifi Options + No Battery Charge

I have an HP Envy x360 Convertible running Windows 11 version 21H2 with the following issues:

• Boots to blue screen"CMOS Reset (502) The CMOS checksum is invalid" and then proceeds to normal OS except:
  
• Network & Internet will not detect any wifi network (though there are several available) Device manager shows intel(r) wifi-6 ax200 = This device cannot start (Code 10). Rollback Driver in device management is no longer an available option.
  
• Power detects the charger while connected but unit immediately loses power once disconnected.
  

Troubleshooting steps completed:

• Multiple hardware diagnostic tests with no indication of issue
  
• Rollback for drivers (doing this would allow an internet connection but power issues persisted)
  
• Complete factory reset & OS reinstall (locally, without USB)
  

What are my next steps to avoid unnecessary cost and/or further trial & error:

• Restore to new OS from USB?
  
• Go somewhere for more thorough hardware diagnostic?
  

Thank you !

 

Error 502

Hi Muhammad,

To better assist you with the Cortana issue, please answer the following questions:

• Which Windows version is currently running on your phone?
• Which app are you accessing when you're getting the error code 502?
• How did you reset the phone?

Regards.

 

Error 502

I am seeing error 502 message on Lumia 430. Moreover, after reset Cortana has also been deleted. How these problems can be fixed?