Acer Travelmate P253-M BIOS

Hi all,

I have a laptop that is stuck at the 'Boot Manager' but will not boot off any device.

The ACER logo no longer shows, and no 'F2' option is available

I've seen the bios 'USB' flash 'Fn+esc' but unable to find the actual BIOS file.

Thanks for any hints or tips.