hp probook 450 g2 LA-B181P Rev: 1.0 power on but not boot Fixed https://bios-fix.com/index.php?threads/hp-probook-450-g2-power-on-but-not-boot.49789/#post-82307
HP Probook 470 G2 ZPL40/ZPL50/ZPL70 LA-B181P Rev:1.0 power on but not display Fixed https://bios-fix.com/index.php?threads/hp-probook-470-g2-power-on-but-not-display.50675/
hp probook 450 g3 beeps 3 long 2 short, I try bios from forum, and they're turning with factory mode but without serial number and other information. I attach my old bios that is not working with dmi included.