I don't think that there was an update, i put it into slumber mode, and when i got home the problem startet. Nonetheless did i try to turn it on after shutting down my wifi, but unfortunately it didn't change anything.
My Lenovo u510 Ideapad is stuck on the "Lenovo splash screen" before the little circle shows. I have tried to disassemble and remove the battery and to reboot from an extern harddisk, but nothing happens, can't even get into bios. Any ideas?