I turned on secure boot and the workstation wouldn't boot (made beeping sounds).
Did a clear CMOS and Windows booted normally, however I don't seem to be able to see the HP splash screen anymore, just a POST screen and hitting ESC / F10 doesn't seem to do the trick. It just boots all the way into Windows.
Ok I've tried this. It does cause booting to stop and display the 'clock has lost its time and settings' message. It says "Press ESC for startup menu". However, pressing esc or f10 on a usb keyboard and a PS2 keyboard has no effect.
Clearing CMOS will lose the time. If USB keyboard is connected to USB 3 port, you need to attach it to USB 2.0 port. However you are still seeing the problem even with PS2 kbd. So this is not the USB 3 issue. If your keyboard is working fine, I think you have to repalce the system board. Plese call HP Support to replace it.
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