For older ProBook models like the 450 G2, HP support previously provided a customized file to reset the BIOS.
If your ProBook generates a recovery code after several failed attempts, you might be able to find a backdoor password. hp probook 450 g2 bios password reset
: Ensure your primary SSD/HDD is at the top of the boot priority list. For older ProBook models like the 450 G2,