Apple logo takes long to show on boot up

[BNHabs]

If someone can give me there advice/opinion I'd really appreciate it!

I did a fix that essentially would allow me to connect to my monitor without the MacBook Air screen on.

However, I decided to opt out, so I disabled it using the provided codes in terminal.

For some reason, when I turn on my Macbook Air I notice that it takes about 20 second to show the Apple logo, but then it boots up very quickly.

Could enabling/disabling this thing using terminal be the cause? If I reformat the computer, does that re-do everything back to stock as if I didn't apply or disable any tweaks?

Here is the thing I did for anyone who is interested:
http://hints.macworld.com/article.php?story=20110901113922148

 

[Intell]

Reset your PRAM (hold Command-Option-P-R at boot and hold until you hear two chimes) and then select the correct startup disk is the Startup Disk pref pane.

 

[BNHabs]

Reset your PRAM (hold Command-Option-P-R at boot and hold until you hear two chimes) and then select the correct startup disk is the Startup Disk pref pane.

You sir are a genius!

Thank you so much for your help! I REALLY appreciate it - you don't even understand!

Someone takes 2 minutes out of there day and helps others - great community and forums on here!

Question: why would an OS command do something that if you don't reset the PRAM is irreversible? Does reformatting your computer fix this as well etc?

 

[Intell]

The nvram command sets variables in the PRAM. It is used by Mac OS X to set things like the startup disk. It can also be used to add other things as with your screen problem/fix. Reinstalling the OS would have likely not fixed that.