VR Error code 1-4

Question

Hello, I recently bought an acer windows vr headset and it worked yesterday great, but now it wont, the error it gives is that i need to check the display cable (Error code 1-4) but i have, and it has not helped, I am clueless on what to do next, my computer is compatible

I do now know though that it does not appear in 'Monitors' in Device Manager, That's all i know