CDJ 2000 Nexus "wait"

Hello!

Haven't used my DJ set in a while and when I came to try and turn it on, CDJ 2000 Nexus-m (1.43 firmware) turns on, then  it says "wait", the screen goes black and then it comes back again. This repeats itself for as long as I have the player on. I have tried to do the factory reset but it does not solve the issue. Any idea what could be causing this? Please help!