Wifi drops connection every time i shut the lid.

Question

wifi drops connection every time i shut the lid, even if only for 1 second and will not reauth with the wifi without removeing, then adding the wifi back and reauth to the network every time i shut the lid.
mbp 2011

Answer 1

Put the hard disk to sleep when possible in energy saving settings
Note: Portable computers that have a battery you should not remove on your own include MacBook Pro (Early 2009) and later, all models of MacBook Air, and MacBook (Late 2009).
1.     Shut down the computer.
2.     Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
3.     On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
4.     Release all the keys and the power button at the same time.
5.     Press the power button to turn on the computer.  
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
Resetting PRAM and NVRAM
1.     Shut down the computer.
2.     Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3.     Turn on the computer.
4.     Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5.     Hold the keys down until the computer restarts and you hear the startup sound for the second time.
6.     Release the keys