Can't turn it on.

Hello!
I am a Meizu user since, umm, 2008, I thinnk, and now I've gotten another weird problem that I need your help in fixing it.
So, eveything worked normal till yesterday. So I left it in the car door shel and forgot about it all day. While it was in the shelf, out side it was pooring rain and windy + cold. The car drove around and shook the player quite alot and stuff. So I came back in the evening and I can't turn the player back on - the play button seems to not be working. When I plug it into my computer, it's working quite fine and is charging. [ No display defects ].
To check if the play button is broken, I tried connecting the player to the computer like a DFU device [ Hold Enter/M buttons ] - it worked! But when I unplug it from the computer it just won't turn on with the play button.

Don't know what to do now. Can anybody help me with this sollution?

If you connect the player with the PC and disconnect it as soon as the "loading" message appears, it should start up normally. If it does, there seems to be a hardware defect. If it's a SP-model there might be a broken solder point at the On/Off button, which is not too hard to fix for someone with soldering skills.

That was the first thing I tried.
I have an SL version, the english one.
But it's weird that trying to use it as a DFU device [ which requiers the play button ] it works.
Oukay, need to find someone who could fix my problem.
Thank you.