The first two parts can be safely skipped.
About two months ago, I bought a new laptop + VR headset together. After about one week, the headset started to report that it had no HDMI connection. Removal and insertion of the cable but had helped. Then about two weeks ago, the same problem occurred again, but this time, nothing helped. So I turned to the support and tried their solutions. They sent me a new cable that also did not help. So I had to send my entire headset to the support and got a replacement headset.
This "new" headset also reported "no HDMI". Only now my brain came up with the idea, "maybe it's the laptop". So I tried to connect the laptop to a TV and there was no signal, despite the working cable. After several attempts to get it running again (reinstallation, latest drivers, etc.) I had to send the laptop to support today.
Now I feel so guilty because I've probably sent a working headset for repair, but I can't say if it did not have any problems, after all I had to fiddle with the cable until it went away. Should I tell the support of the headset directly that the laptop has a problem? Or should I wait until the self report again? Can there be any costs because of my stupidity? Finally, I have caused those costs for shipping and at least checking my device.
You will notice that the headset is not broken and you will have to pay for the technical review. Is in the warranty bookings anywhere readable in it.
In the case of missing technical defect or own negligence does not guarantee.
Your devices still have warranty, the cost of the repair can't come to you.
However, you could perhaps contact the support and write to them that you suspect that it is on the headset.
I also had to send my IPhone back because it did not accept the headphones, but with the model it was true that they only fit into an iPhone and I did not have the opportunity to somehow test it. But that's the guarantee. There are no costs for you.
But it would probably shorten the time if the support does not even test the headset, or rather the technicians. You have to decide that for yourself.