Hacker warning now laptop just displays Lenovo logo on start up

NiftyDigits

If that doesn't work, try Shift + F8 key on start up

If that doesn't work, try Shift alone on start up.

If that doesn't work, press F8 on start up

If that doesn't work, press F4 on start up.

If all fails, you can simply remove the HDD. It's very simple. Then start the machine and report what happens then.

https://www.youtube.com/watch?v=WQuWQkDd4iA

movinghelp

Right got the start up message again so there's 5 sections (information, configuration, security, boot and exit). Under security it says secure boot and secure boot status are enabled and I can either reset to setup mode or restore factory keys. And advice?

I don't have an uncorrupted laptop to follow the other instructions. Happy to restore it and lose what was on it.

NiftyDigits

Remember the combination that you utilised to get into the BIOS setup, lest you need to go there again later.
If you don't have another laptop, you'll just have to try the One Key Recovery function.

https://support.lenovo.com/gb/en/products/laptops-and-netbooks/lenovo-b-series-laptops/lenovo-b50-30-notebook/documents/ht062552

https://support.lenovo.com/gb/en/documents/ht077084