I have Dell XPS 9350 ultrabook i7 win10 pro version. After moving to the United Kingdom, it suddenly stopped working randomly. I was getting black screen and cpu error (2 ambers 1 white led light flashing in a sequence). Firstly, I planned to change mainboard. But then I found a temporary solution! Firstly, Unpluged power cable. Secondly, disconnected battery from mainboard, waited 15 seconds and then connected back battery cable to mainboard. Finally, my laptop worked.
After a while I found the main reason! If your laptop is in a damp room (like bedroom). It will stop working becasue of condensation on the cpu and mainboard. In other words, it will protect itself from short circuit.
Solutions I found for my Dell XPS13:
1) Tried to open laptop insistently. After 5-6 try, it could load windows. Even if screen is black, CPU will work background and will be hot at the bottom. This will solve the problem of condensation inside the laptop. But I don't advice this way! You can damage it.
2) Simply used a hair dryer :) heated the bottom of the laptop through the cooling fan vents.
Please be aware! These solutions are not a suggestion. All responsibility belongs to you.
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