My Htc M8 wont boot into fastboot mode does this mean I cant flash a custom rom

[lordgonz]

My HTC M8 wont boot into fastboot mode, holding the volume down and power button, it just hangs there doing nothing until I let go then boots normally, the existing software has tethering issues (will not share mobile data). Android version 5.0.1 does not list fastboot mode in battery manager, does this mean I won't be able to unlock bootloader and flash a custom rom.

 

[lordgonz]

disregard I got fastboot working