Bluescreen

[Hashim101]

Hello, my laptop has 4 cores, and it was on ly use 2 core, and when i tied to change my core from 2 to 4 and then restart my laptop, I got bluescreen error that told me please remove any newly hardware devices. And my laptop doesn't want to start. I tried to open bios advance to get back the cpu core to as it was be, but it locked. How can fix this problem or how can I lock advance bios? My laptop model( 15-bs0xx core i5) 

 

[Rainbow23]

Hi @Hashim101,

Welcome to HP Support Community. 
Thank you for posting your query, I will be glad to help you.

Please follow steps listed below to perform a BIOS defaults.

1) Shutdown the computer. 
2) Turn the computer back on again and repeatedly tap on the ESC until a Startup menu appears. 
3) Press F10 once for BIOS. 
4) Press F9 for BIOS defaults. 
5) Press F10 to save and exit.   
You may also refer to this document

Let me know if this helps.
Take care and have a good day.

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