mobile

Hello guys I hope I can get some help.

I am all new to the mobile rooting and ROMs and stuff like that.
I am not a noon I know a lot about pc but never got much into this mobile tweaks.

Anyway I saw the cm12 ROM in this forum here and wanted to install it.

My phone was already rooted or unlocked when I bought it it has su manager installed so I think it is rooted and unlocked.
Even when I am at the fastboot menu it says UNLOCKED.
BUT still I am not sure if it is ready to try and install a rom.
So I tried to follow the guide on how to unlock the phone at this forum about HTC one v .
And I got stuck at step 9 I think where I had to go to fastboot mode and connect my microusb to the PC.
There I get the little bubble saying USB device not recognized so I can't continue to do anything with cmd.

So the question is .
Do I even need to do this or is my phone already rooted and unlocked with bootloader.
Is there a way to check this things.

Because I installed ROM manager and tried to install the cm12 ROM from the SD card but it doesn't work it aborts the process pretty quickly.

So I am completely stuck..

If you guys would be nice enough to post some links where I can find out if my device is rooted or not or unlocked or not and how to proceed it would be awesome.

I have searched for hours and tryed many things but nothing worked or I got stuck somewhere .

If someone could guide me through this process I would be really grateful .
Thank you