Problems with Wifi when waking from sleep, stuck on loading screen

[maknum]

Hi guys, was wondering if anyone can help me here..

I currently have Mavericks installed on my 2008 Penryn MBP, which has had the logic board replaced, and a Sandisk SSD placed last year.

The computer had been running well, until I was stuck on the loading screen a month ago and couldn't boot up at all. I took it to the apple store, they ran their diagnostics and found that my HD was "unrepairable" via disk utility, so I had to wipe the whole drive, and they re-installed Mavericks for me.

Since then I started having problems with booting up and wifi, which I never had before.

My Wifi problems are pretty common for Mavericks I think. Usually if my computer is waking from sleep, most of the time the Wifi is disconnected, and when trying to click on the icon it either freezes or does nothing. Sometimes it shows the exclamation mark in place of the wifi icon. I can use other apps on my computer but can't get on the internet.

Then, when I reset the computer, I usually get stuck on the loading screen. I usually have to boot into recovery mode (sometimes I get thru, sometimes I don't), then just manually restart again and it boots up. When I Do make it into safe mode, when I run the disk utility it says my disk is fine.

I also noticed recently even when I am able to start the machine, I don't have the startup chime anymore.

Anyone have any idea whats going on? Its super frustrating, and would appreciate any help you guys can give me. Thanks in advance.

 

[sharon22]

This is a perfect example where "Console" comes in handy. "Console" is located in Applications --> Utilities.

You can either have Console up and running while this is happening, or, just make a note of the *exact* time your problem occurs.

Then, when you start up Console, you can look at all those system messages. When you read through those messages, I almost PROMISE that you will find some clues there why WiFi won't run after waking from sleep.

Of course, make SURE you have updated your software.

For example, the Release Notes from 10.9.4 (I'm running 10.9.5) actually SAY that reliability is improved when waking from sleep, and fixed an issue where wouldn't connect via WiFi.

One more thing -- do some basic housekeeping. Here are some suggestions (google them if you don't know the procedures):

1.) reset PRAM.
2.) start up in Single User Mode and run "FSCK" (that's not a swear word, that's the command to do a basic disk/volume repair, takes about 45 seconds).
3.) Download and run Onyx (No, I don't work for Onyx.... I just have OCD, and TOTALLY LOVE deep-disk-maintenence programs like Onyx).
4.) Go to the App Store, and get your computer totally up to date (I wouldn't install Yosemite, though, but that's just me.... don't get me started).
5.) Well, there is no "5." That's about it. Do those things, and your computer should be all fixed!

If you STILL have problems, make sure your software isn't screwed up somehow -- go into Users, and create a Brand New User. Then, log out, and then log yourself back in as the New User you just created, and see if those same problems persist in the Fresh New User Environment you just created. If all the problems vanish, then that means you've might have mucked up your preferences somewhere, or corrupted your software. If you do EVERYTHING I've described here, and STILL have problems, then simply (hahah -- 'simply') re-install the OS.

 

[maknum]

thanks so much! Downloading onyx now as we speak.

I actually had to take my laptop to a store to have it checked out. It came to the point where I couldn't startup, and was stuck on the loading screen. The guy said all the hardware was fine, just software issue and had to re-install the OS (data was still intact thankfully). Frustrating because this is the 2nd time in the last month I've had to do this, but hopefully this fixes it.