I have Dell XPS 13 L221X. I updated it to Windows 10. I see the laptop heats up (upper half of the bottom of the laptop) and it then randomly shuts down. I feel it happens when I am loading a page that has video, ads etc, I hear sometime fan go on, and it then shuts down. Invariably, when this happens seems like the laptop has heated up. Any thoughts?
Given the age of the system, if it's never been cleaned out internally, it's time to remove and thoroughly clean the heatsink-fan assembly and replace the thermal compound that sits between that and the CPU (and/or GPU) heat slug.