@ottobunnycoder
Picture would be helpful
Has it worked just recently?
If not has it got a coin cell battery on the motherboard?
If so, disconnect the power to the PSU, remove the coin cell battery, press the power button for 30 seconds to dissipate the residual power on the board to reset the BIOS , disconnect the SSD, reconnect the power and try to get into BIOS.
Press either Del, F2, F10 or Esc and then F10. (the last two are what HP has used for a long time so hopefully it may be applicable).