But I do allow such access and more. Some antivirus suites can cause this issue too. I don't own your model and I see little about the PC. So try the rear ports of the desktop PC.
My device when plugged into a laptop does not come up with the iTunes alert asking whether it should trust the PC but instead says "Allow this device to access photos and videos?". Whether I press allow or not, iTunes can't see my device, meaning I can't sync with my PC. I have already tried PC-ControlCentre-iTunes-repair and resetting all iTunes warnings and resetting iOS privacy settings. How should I fix this?