RE: Inspiron 15-5548 - maybe Touch Screen issue, not sure ..
If it helps I'm having the same problem. I've tried a clean install and even replaced the hard drive with SSD. DELL and I have spent a lot of time on the phone with this including updating BIOS and drivers as my machines two years old. It's good to hear I have support in that you have the same problem. I'm going back to them today as they've not sorted it out. My screen is not a perfect fit to the casing and I wonder if this has any thing to do with it?