Yes, my guess is most of western Europe would collapse after one or two weeks without electricity.
I have seen people acting really erratically just after a few hours without electrity and internet. Most people are so clueless they would quickly put their home on fire because they do not know how to safely use candles.
Also, just looking at what would happen to a large part of the population once they would run out of meds is terrifying. Heart medications, SSRI, anti psychotics. etc.
There is not gonna be a war in Europe like how WWI and II was described to us. It is gonna be far less heroic.