Hallo all. I'm new in here. I write you from Italy. This is my first post and I have a question for all of you. I read about MBA with pronlems on the startup process on the power button but all were for water. My problem is different. I have my MBA (end of 2010 RAM 4Gb SSD 250 Gb) and it doesn't startup when I push the power button. Water never goes on the MBA but, from 2/3 months the problem is more and more big. On 10 times I try to power up it, it starts perhaps 1 time. I tried all reset pram... Etc etc i tried all buttons combinations and even to format it and reinstall operation sydtem (mountain lion) but nothing. Last evening I installed xscan and chessmate (two diagnostics programs) and I saw some strange. The MBA goes in stop mode and escape from stop mode more quickly and even when i shut down the MBA it seems to has not the problem (for now). Before reinstall Mountain Lion last night, i tried to reinstall from the flash card usb, in the box with MBA, and it seemed working good. I really can't understand what can it be and even what i can do to resolve the problem. Thank to all. Sorry for my bad english.