2 
1 MacBook air won't startup unless power button held on for long time.
I was working on my MacBook air . Suddenly the screen went to sleep mode. When I tried to put it back by pressing the power button the keyboard lit but the screen did not. So I forced shutdown by holding the power button but then I could not start it normally until I had to long press the power button and kept it pressed till the apple logo comes on the screen. If I leave the power key before The apple logo appears it does not turn on . Now after turning on it takes !&&*.lot of time to boot(around 5 mins) after booting the system is too slow.
Tried SMC AND NVRAM RESET . NO HELP . PLEASE SUGGEST SOME REMEDY.
Update (09/08/2017)
posted
crwdns2934109:0crwdne2934109:0
crwdns2889612:0crwdne2889612:0
4
2.6crwdns2936485:0crwdne2936485:0 
crwdns2944067:06crwdne2944067:0
same problem here, anyone can help to fix it?!:/
crwdns2934271:0crwdnd2934271:0 quinzey crwdne2934271:0
hey, if u did something and it helped I really need it please
crwdns2934271:0crwdnd2934271:0 Mr steal your Girl crwdne2934271:0
Hello,i have exactly same problem,how did you fix this problem?please help
crwdns2934271:0crwdnd2934271:0 ishant agrawal crwdne2934271:0
is this fixed? Its 2020 and I still have the macbook air early 2014 model and I have the same problem. I’ve been trying to solve this problem for almost a month now. please help me I need to fix my laptop badly because it is the only thing that I use in online class this pandemic season.
crwdns2934271:0crwdnd2934271:0 gigi go crwdne2934271:0
I have similar problem with my MacBook. For this problem I hav kept my MacBook Air 2015 fo the past two years now. I have to long press the power button to turn it on and when on, it becomes very slow.
crwdns2934271:0crwdnd2934271:0 Mohammed Sannoh crwdne2934271:0
crwdns2934273:01crwdne2934273:0