I have a Tomtom that is about 6 years old. It worked fine but I had to lay up my car for a few months for an operation. During that time, the screen was clearly delaminating around the edge and fell off when I started driving again. I now realize that the touch screen isn’t working. ( The Tomtom has updated and looks fully functional). Anyway I held the screen back on , expecting that to be the problem but still it didn’t work. Should I assume it just needs resetting or is there something vital about how that outer screen works. Thankyou