Windows 10: Laptop shuts off

I installed a new cooling fan in my HP laptop. Windows will not identify the new hardware. Since the last update a couple of days ago my laptop shuts off after a few minutes of inactivity. When I restart, I have to be quick to hit the enter button when the 15 second message pops up telling my there is a problem with my cooling fan. This is NOT a 'going into sleep' mode after a few minutes. It literally shuts off. It did the same thing after an update a few months ago. Then after the previous update it started to stay on all the time, which was great. It would go into sleep mode but all it took was to touch a key or the mouse and all was well. Now I am back to the previous problem. How do I fix this?

:)

 

Best laptop under $800??

Well the last one I suggested seems to be the best for 650$

EDIT: to facilitate your search...

Laptop GFX benchmark list

Laptop CPU Benchmark list

 

Laptop won't shut down

Hi Muhammad,

Most of the time, the issue regarding a device that won't shut down properly may be caused by a system conflict after an update or that there are some incompatibility issues. To assist you with this concern, we recommend that you run the troubleshooter.
To do this, kindly follow the steps listed below:

• Type troubleshooting in the Search bar and press
  Enter.
  
• Click on View all on the left-side of the page.
  
• Click on each category below then follow the on-screen prompt to run the troubleshooter:
  

• Background Intelligent Transfer Service
  
• Hardware and Devices
  
• Power
  
• Windows Update

Note: Make sure that you restart your PC after running the troubleshooter for each category.

Let us know how it goes after performing the suggested steps.

 

Laptop Refuses to Shut Off


Hi, Phil. I'm doing what I've always done: slide the cursor to the lower left screen and click on Shut Down. But instead of shutting down the laptop responds as if I hit Restart.
Just tried your suggestion and hit shift but it made no difference. Laptop rebooted.