So I bought an old Compaq Presario 5155 with no hard drive. I installed an IDE to SD card adapter and set out to install Windows 98 from a CD, but I haven't been able to figure out how to get to the boot menu. I've tried most of the function keys, ESC and DEL. F10 takes me to the BIOS but it does not allow setting of the boot priority. Does anyone know how to access the boot menu on these old Compaqs? I haven't been able to find any manuals or information online.