Hp spectre X360 13 AE (2018) system fan error 90B

[FabioSocc]

Hello,

a screenshot with 90B fan error appears very often at power on of my HP Spectre X360 13 AE laptop.

Sometime, when I carry a hard reset (power on button pressed for about 6 seconds), the problem disappears. After few days, it appears again. Very randomly.

However, fans seem to be ok. They start to work after 4 to 8 minutes after power up when CPU is highly engaged, and there is not too much noise (considering about 3 year of activities). Computer is not too hot, and never happened an automatic  power off  or block.

Available  HP diagnostic software on other hardware components reports no error. I haven't found, for this HP X360 AE, a software  to check for fan integrity or speed , or temperature issues. 

Any suggest in order to better understand, manage or solve this problem ? Obviously, I don' t want to 'crash' my laptop, and I'm worry about it.

Maybe a 'electric fail contact' of the fan connection that at startup does not check correctly the fan status ?

Thank to all of you  in advance

[KrazyToad]

@FabioSocc

Welcome to HP Community

I have gone through your Post and would like to help

I suggest you download and run the HP Support Assistant from this Link: https://www8.hp.com/us/en/campaigns/hpsupportassistant/hpsupport.html?jumpid=va_r602_us/en/any/psg/p...

HPSA will automatically search for all the latest drivers for your Notebook

1. Click My devices in the top menu, and then click Updates in the My PC or My notebook pane.

   

2. Click Check for updates and messages to scan for new updates.

   

3. Review the list of updates. Updates with a yellow information icon are recommended. Updates with a blue information icon are optional.

4. Click the update name for a description, version number, and file size.

5. Select the box next to any updates you want to install, and then click Download and install.

Also ensure Windows is up to date.

Select the Start  button, and then go to Settings  > Update & security  > Windows Update , and select Check for updates. If Windows Update says your device is up to date, you have all the updates that are currently available

Also follow the instructions in this Link: https://support.hp.com/in-en/document/c03620929

Keep me posted how it goes

Thank you and have a wonderful day 😊

If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue.

[FabioSocc]

Hello.

I called by phone HP support after sending an email.

BIOS updating didn't solve the problem.

We checked for CPU temperature under hard run (prime95). They were ok, and fans seemed to work well.

In the opinion of HP support, the error should be a 'false error' on startup. The PC is out of warranty, and any hardware check or spare part is very expensive. 

Finally,  HP support suggested me to reduce the CPU clock speed, under normal use, down to 1.8 Ghz. This  was done by adopting an enhanced setting (they gave me a new key register entry string ) in the control panel (disabling 'aggressive mode').

In the last 5 days, the error never happened.  But I'm not sure that it will not appear again. But I'm also confident that fans are OK.

HP support I received was very effective, in my opinion.

Thank you for your interest, best regards.

fabio

[KrazyToad]

I'm glad you got this sorted out

Drop us a message anytime you need help

Thank you