My MacBook Air 13' (2013) will occasionally start the fan at full blast, not connect to any wifi or detect any wifi, and will remove the battery icon from my menu bad as well as tell me there is no battery connected. How do I fix this?

My MacBook Air 13' (2013) will occasionally start the fan at full blast, not connect to any wifi or detect any wifi, and will remove the battery icon from my menu bad as well as tell me there is no battery connected. How do I fix this? I have restarted my computer multiple times, **** it down, and ran a diagnostic test to tell me nothing is wrong and my computer is not running any applications. There is no reason for the fan to be on full blast! when I try to set the option to show my battery icon in the menu bar, it will automatically uncheck. How do I fix all of this?

Have you tried SMC and PRAM resets?
http://support.apple.com/kb/HT3964
http://support.apple.com/kb/ht1379
Ciao.

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