Home Forums Tech Helproom No Bios access at start up Forum Rules | Contact Forum Editor | Report a Post No Bios access at start up Viper3 00:52 09 May 2017 Locked Answered I have a PC that will not allow access to the BIOS. Upon boot up I have an Intel boot agent PXE error code. It has a continuous DHCP ,,,,,,,,,,,,,,,/ If I hit escape it will boot to windows. How can I resolve this issue? Jollyjohn 12:02 09 May 2017 Make and model of PC would help us be more specific. In the mean time try F2, Tab, Del, F10 - tap the key repeatedly as you boot the PC. Viper3 00:18 10 May 2017 Answer the computer is an HP Compaq 6200 Pro-Micro, Obviously!! I have tried all of the normal keys that will allow access to the BIOS but to no avail. This leads me to this post. Jollyjohn 10:00 10 May 2017 F1 or F10 according to this click here If PC boots to windows, can you use the HP Diagnostic software? Jollyjohn 10:55 11 May 2017 Do you have an old PS/2 keyboard to try? Viper3 02:33 12 May 2017 I started out with a PS/2 key board and switched to a USB no difference. Still unable to access the system bios. Jollyjohn 10:37 12 May 2017 You could try removing the CMOS battery and resetting BIOS, replace battery and reboot. This should force the BIOS setup to open to correct the date and time. This thread is now locked and can not be replied to.