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gaconsooner

macrumors newbie
Original poster
Sep 20, 2016
1
0
Hi all
My macbook has got weird issues after upgrading to El Captain

First, my sister unintentionally upgrades the OS from Leopard to El Captain from AppStore. After everything is finished, the screen asks for password but I can not type the correct password which is simply "boomer"

I decide to format the hard drive and re-install Yosemite on the Mac. However, the boot-up time takes so long and the password screen still shows up. This time, I can access to the main window but the keyboard is messed up. When I type 1, 2, 3, 4, ... it shows ! @ # $
and all letters are capitalized not matter function keys chosen

I'm really frustrated with search aimlessly on the Internet, I hope some experts will give me the answer
 
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