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HP ENVY Laptop 17-bw0xxx 17
Microsoft Windows 10 (64-bit)

The laptop was new at the end of August 2018.

A few days ago the HP Support Assistant providied a BIOS update which I installed.

Since then on power up I first get the power switch light flashing, then the light on the caps lock button give 3 long and 5 short flashes which I understand says it can't find the CPU.

Forcing a power off, waiting the n powering on again gives "The CMOS checksum is invalid." CMOS 502.

Press enter to rest and the computer starts and runs fine.

I assume that the BIOS updtae is invalid, or has not installed correctly (all done through HP Support assistant).

Any advice and a fix greatly appreciated

1 ACCEPTED SOLUTION

Accepted Solutions
HP Recommended

Hi

 

https://support.hp.com/us-en/document/ish_3932413-2337994-16

 

Hardware

3.5

The processor is not detected.*

 

Indicates potential CPU failure.

1 If able, reseat CPU.

2 If able, test known good CPU.

3 Replace affected component.

4 Replace CPU & Main-Board if unable to perform steps.

You are correct.

View solution in original post

3 REPLIES 3
HP Recommended

Hi

 

https://support.hp.com/us-en/document/ish_3932413-2337994-16

 

Hardware

3.5

The processor is not detected.*

 

Indicates potential CPU failure.

1 If able, reseat CPU.

2 If able, test known good CPU.

3 Replace affected component.

4 Replace CPU & Main-Board if unable to perform steps.

You are correct.

HP Recommended
@Lil_Boy_Blue wrote:

Hi

 

https://support.hp.com/us-en/document/c02693833

 

Hardware

3.5

The processor is not detected.*

 

Indicates potential CPU failure.

1 If able, reseat CPU.

2 If able, test known good CPU.

3 Replace affected component.

4 Replace CPU & Main-Board if unable to perform steps.

You are correct.


Thank you for the link. This seems to have worked successfully.

HP Recommended

Prego.

 

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