Re: Boot freezes after van clean
I guess by "van", you mean "fan" -- as in the fan that is mounted on the heat sink on top of the CPU (processor) right?
One possibility is the the thermal paste is on too thick, effectively, preventing it from doing its job. Generally, with the modern pastes, you only want a very thin layer. All that does is fill in the minute, tiny air gaps between the top of the processor and the bottom of the heatsink on the fan. If you put too much on, it serves instead as an insulator -- doing the opposite of what you want.
If the fan is running very loud, that's a sign of overheating. So, I would check the thermal paste.
As to silicon, I clean fans regularly and never heard about having to use silicon for anything.
Ubuntu 16.04 Mate, Mint 17.3; MS Win 8.1, MS Win10 Pro.
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