Need help unlocking my bootloader on HTC Desire 310 EDIT: It has failed with a too many links error

This christmas I was treated to a HTC Desire 310 and I am trying to root it which I understand needs the bootloader unlocked.  That is where my issue is, below is an image of my command prompt which has been the same for about 30 minutes
I have been following the HTCdev guide by the way
It happens because in fastboot mode, you can only turn on using ADB on the PC, so when your phone is turned on and connected and ADB can see it, go to 5 string (FASTBOOT) and choose 0 (reboot to bootloader), phone will reboot. Now you're in a fastboot mode.