Macbook pro just stopped connecting to wireless internet.

I have tried restarting it and deleting the old usernames and paswords, but nothing works. I thought it might be an internet problem but i am having the same problem at home and school.
Can anyone help me?

My macbook stopped connecting to wireless internet. Ive tried everything. HELP!
Open System Preferences then select the Network tab.
Cick Assist me... then click Diagnostics
If any of the buttons on the left are red click Continue.
That should help narrow down whether it's Wi-Fi or your settings or your ISP.
Might be something in this article you haven't tried yet > Troubleshooting Wi-Fi issues

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MacBook Pro can't connect to wireless internet

I have a MacBook Pro that I have had from about 3 years now. It's been great but earlier this week, it wasn't able to connect to the internet here at my school (college). I didn't think too much of it because my schools internet is always spotty and goes down from time to time. Yet when I go on to my computer tonight nothing I do with my airport or computer will get my webpages to say anything other than "Server not found". I tried turning off my airport then back on and reselecting my network because usually that helps. It would say it connected and I would have full bars but still the same error message. I tried again, and when I did it this time, I did it from within the system/network preferences. When I did this, I watched the connection of my airport go red, then I would connect and it would go to yellow saying I had no IP address. I would then sit and wait and eventually it would fully connect giving me the green go-a-head. But, again when I would open up my internet, I would get the "Sever not found" message. I would then quit my firefox all together and tried again that way and still same massage. I restarted my computer and tried again...nothing. I became more concerned because my roommate could get on the internet just fine and I could use the wireless in my room through my phone. I was consered that now this was a matter with my computer and not just the internet, so to make sure I got out my ethernet cable and hooked it up with my connection in my room. This would work!
So my question is...
My roommate brought up the possiblity that this problem is with some sort of chip in my computer that helps me connect wirelessly to the internet and that it has gone bad and needs to be replaced. It this so? or is there something else I need to be doing? (and I have been trying lots of thing) This is vital to me getting my work done because we are in the middle of the semester and I need my wireless!!
Please help!
Thanks!

thats... odd
thats a real world IP address. So that means you dont have an actual router doing NAT.
It's also very unsecure. I HIGHLY advise tweaking your home network very soon. Without alot more info theres not much that I can really advise though.
You said your roommate can get on the wireless fine - what IP address does he/she get?
Also, i think you said if you plug in with a physical wire it works as well - what IP address there?
Do you know if you have an actual router? Or is this simply a cable or dsl modem?

Brand new Macbook Pro won't connect to wireless internet

Hi all, I'm relatively new to the whole mac thing, but I have a problem. I got a macbook pro for college last week, and have been struggling to connect to the internet ever since. I notice other's are having issues too.
So here's what's going on:
When I set my pro to using DHCP, I get no IP address, or sometimes get the self assigned address 169.etc. Yet when I put in a static address, subnet mask and router info I've found for my network, It says connected but when i click on safari no internet. I've run diagnostic in safari and all the lights go green (under manual ip etc) except internet and server (which are yellow). What's going on here? It can't be the airport card, because my pro connects seamlessly to my college's wifi, my ethernet cable and rogers internet stick. So is it my modem/router combo (using a siemens SE567), or is it because I'm running 10.6.4?
Please help, I have to use the internet for uploading videos and other heavy internet usages that my internet stick can't do (unless I want a $100 bill each month), and being tethered to my ethernet is kind of a bother.
*I should also note I have a pc laptop that runs fine off the network (siemens se567), though setting it up also gave me issues.*
Thanks

I'd suggest you repost over in MacBook Pro forum, and in Using OS X Networking.
There are Apple technotes on troubleshooting networking and setup.
http://docs.info.apple.com/article.html?path=Mac/10.6/en/11395.html
http://support.apple.com/kb/TS1317
http://www.apple.com/support/macbookpro
People who are handy with networking issues and 10.6.4:
http://discussions.apple.com/forum.jspa?forumID=1343

My macbook pro (lion 10.7.2) stopped connecting to wireless internet even though network indicates it is connected - full bars.

My macbook pro (10.7.2) just stopped connecting to the internet. 2 other macs in the house are working fine. All 3 are in the same room as the airport. The macbook network icon indicates it is connected with full bars. We have turned the computer off and on, but no effect. Any ideas?

Have you tried turning Airport off and then on again? My own q about this is somewhere in the answered q's--what worked was either the Airport on-off or something my phone company did while I was fiddling with Airport. Good luck!
Gail

Macbook Pro suddenly stops connecting to wifi

So yesterday, my macbook pro suddenly stopped connecting to any wifi sources at all. Instead after trying to connect, it just gives me the icon with the ! mark, saying that there is no connection made. I've tried multiple routers/sources, and they all don't work. The only reason I'm even connected to the internet right now is through tethering via usb (when I try to make my phone a hotspot, my computer doesn't read it, of course).
Does anyone have any idea why this would happen?
My software is up to date, completely. Macbook Pro, 2010 model, OS X Lion 10.7.3

Give a call to ISP tech support.
If you have time to read, the link below will take you to the Apple support site.
http://support.apple.com/kb/HT4628?viewlocale=en_US

My MacBook pro will not connect to the Internet through wifi yet all other devices do

My MacBook pro will not connect to the Internet through wifi. I have several other wifi enabled devices and they are all connected to the Internet just fine... What could/would cause this?

Disable your AirPort and enable in a second. Or check, maybe you need to type in correct digits in; Settings/Network/Advanced/Configure...

MacBook Pro Retina stopped connecting to my wifi. But all other devices still work on it.

My MacBook Pro Retina stopped connecting to my wifi. But all my other devices still work on the wifi. I can connect to wifi on the MacBook through my personal hotspot on my iPhone 4S. I have not changed any settings on my wifi network, and I have not changed any wifi settings on my MacBook. Please help!

Care to share which OS you are using?
Have you read for possible solutions over in the "More Like This" thread over here?----------------------->
Change your router channel number. Most times this works & is all you have to do.
System Preferences>Network
Click the Assist Me button.
In the next window that pops up, click the Diagnostic button & do the necessary.
Research Knowledge Base for network problems that pertain to the OS that is currently installed on your computer. See these basic networking KB Articles: http://support.apple.com/kb/HT1401 AirPort troubleshooting guide
http://support.apple.com/kb/HT2712 Using network locations in Mac OS X
Manually provided DNS server addresses are higher priority than DHCP's
http://support.apple.com/kb/HT1714 Solutions for connecting to the Internet, setting up a small network, and troubleshooting
============================
What to do when you can't connect to the Internet
Also, run the Airport Utility app which is located inside the Utilities folder.
=====================
If using a Linksys router, contact LinkSys Customer Support and/or post in their forums.
If using Apple's Airport, please re-post over in one of the AirPort Forums.

My MacBook Pro won't connect to the Internet, but my phone and PC will.

My MacBook Pro won't connect to the Internet. My iPhone has no problem doing so, and neither does my PC. I think it's something to do with my DNS, but I'm not sure. My network connections say that both my Ethernet or FireWire are failed. What's wrong with my MacBook? Is there a simple way to fix this?

Hello Rattisate,
Sorry to hear you are not able to connect to Wi-Fi on your MacBook Pro. I would be concerned about this too. You can find information on how to troubleshoot this in the following article:
Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6
http://support.apple.com/kb/HT4628
Follow the steps in the section labeled, "Symptom: My Mac does not connect to the Internet."
Thank you for posting in the Apple Support Communities.
Best,
Sheila M.

My MacBook Pro won't connect to the Internet via wifi but it worked fine on ethernet cord...I tried running diagnostic but it didn't work:(((( it happen every time if I restart the modem and/or router

My MacBook Pro won't connect to the Internet via wifi but it worked fine on ethernet cord...I tried running diagnostic but it didn't work:(((( it happen every time if I restart the modem and/or router.. Any idea how to fix this?

Hello Rattisate,
Sorry to hear you are not able to connect to Wi-Fi on your MacBook Pro. I would be concerned about this too. You can find information on how to troubleshoot this in the following article:
Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6
http://support.apple.com/kb/HT4628
Follow the steps in the section labeled, "Symptom: My Mac does not connect to the Internet."
Thank you for posting in the Apple Support Communities.
Best,
Sheila M.

MacBook Pro will not connect to the internet

Suddenly, my MacBook Pro will not connect to the Internet--even when I take the cable from the Time Capsule and plug it into the laptop...
-Internet is good
–WiFi is connected
-both work with my iPad...

You should show WiFi:
Do you have it turned on?
Clinton

Hi recently my MacBook pro has stopped connecting to our office Synology server automatically. I now have to Go Connect to Server etc in order to browse the file server. Clearing key chain and then readding everything hasnt made any difference. HELP

Hi recently my MacBook pro has stopped connecting to our office Synology server automatically. I now have to Go > Connect to Server > etc in order to browse the file server. Clearing key chain and then readding everything hasnt made any difference. HELP

Not sure what other tests they could run for me. I've pretty much run all the tests I can using Drive Genius and Tech Tool Pro 5. Is there anything they use that I don't know about??

I was using Safari , 5 tabs open, when my macbook pro just stopped working .What can i do ??

I was using Safari , 5 tabs open, when my macbook pro just stopped working .What can i do ??

Press the Power button for about 10 seconds to shutdown the computer. Wait a couple of minutes then restart. If it restarts OK, then immediately repair the hard drive:
Repair the Hard Drive and Permissions - Mavericks, Lion/Mountain Lion
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu. Select Restart from the Apple menu.

MacBook Pro and iMac keep losing wireless internet connection.

Greetings all, two weeks ago I purchashed a MacBook Pro and iMac and they've worked fine, except for the internet. The wireless randomly goes out, but the airport bars remain. At first I thought it was just pages having trouble loading because of the OS (stupid I know) It's been happening more and more frequently and the only way to solve it is to turn the Airport off and then on which allows the internet to reconnect. My wireless router is connected to an HP an the router is a Dlink 1310 wireless G router. Any help would be greatly appreciated.

Hi all,
It seems I am not alone. There is a very strange problem either with my brand new unibody MacBookPro 17" or the Airport Extreme I am using to connect to the Internet via a cable connected router. The router I am using is Billion 7300 and works fine, and I can even connect to the wireless access via the router and all works fine. I am using Airport Extreme to extend the access area in my house and also use a USB drive for storage attached to the AirportExtreme. The funny thing is that the first couple of weeks I had no problems with the MacBookPro going on the Internet via the Airport. At that time I had the wireless part of the Billion modem disabled so as to avoid possible interference. Suddenly, one day about a week or so ago, the MBP would connect first time to the wireless Airport and to the Internet for only about a few seconds and then no update on any of the web pages. I was suspecting first my ADSL, but that was all along OK. The signal strength to the Airport is strong, but just the connection to the Internet is no longer available. Strange thing is I have in the same room a 24" iMac and this is still connected to the Internet via the Airport with no problems. Same settings on both! I tried everything I could think off on the Airport, tweaked, changed, reset and created new connection - but without any luck. It is as if the Airport decided to just block the MBP for whatever reason. I also have the Little Snitch, which I disabled too.
I was hoping that the latest Leopard 10.5.7 would have a fix for such a behaviour, but no change.
I cannot make any conclusion as everything contradicts: if the MBP wireless has a problem, I wouldn't be able to connect to the Billion wireless; if the Airport is at fault I should not be able to connect to it with the iMac. I go to work where other two brands of wireless hot-spots I use (D-Link and Billion 7402) and I have no problems swicthing between the two. It seems only Apple's Airport is a problem for my new MBP.
It must be something in the software of the Airport or MBP ?!?!?
APPLE, PLEASE HELP, THIS IS ANNOYING.
I already spent three days trying to solve a problem that should be 'No Brainer" according to the Apple's design books. But I do have a problem that I did not know about before.
Thank you in advance for any suggestions.
Vlado Damjanovski, Sydney.

My macbook pro will not connect to the internet via wifi or ethernet connection

Hey guys just a few days ago randomly my 2011 macbook pro stopped connecting to the internet. My girlfriends macbook still connects fine as well as both of our iphones and my tv. Under network in system prefrences wifi is yellow and says self assigned ip, however ethernet says that it is connected with a green light but safari nor any other internet using applications will work. I even tried downloading google chrome from my girlfriends mac book and moved to my computer via flash drive but still no go on the internet. Please help me.
-thanks

Please read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software — potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions — they’re easy to carry out and won’t change anything on your Mac.
These steps are to be taken while booted in “normal” mode, not in safe mode. If you’re now running in safe mode, reboot as usual before continuing.
Below are instructions to enter some UNIX shell commands. The commands are harmless, but they must be entered exactly as given in order to work. If you have doubts about the safety of the procedure suggested here, search this site for other discussions in which it’s been followed without any report of ill effects.
Some of the commands will line-wrap or scroll in your browser, but each one is really just a single line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, and you can then either copy or drag it. The headings “Step 1” and so on are not part of the commands.
Note: If you have more than one user account, Step 2 must be taken as an administrator. Ordinarily that would be the user created automatically when you booted the system for the first time. The other steps should be taken as the user who has the problem, if different. Most personal Macs have only one user, and in that case this paragraph doesn’t apply.
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
When you launch Terminal, a text window will open with a line already in it, ending either in a dollar sign (“$”) or a percent sign (“%”). If you get the percent sign, enter “sh” and press return. You should then get a new line ending in a dollar sign.
Step 1
Triple-click the line of text below to select it:
kextstat -kl | awk '!/com\.apple/{printf "%s %s\n", $6, $7}'
Copy (command-C) the selected text to the Clipboard. Then click anywhere in the Terminal window and paste (command-V). Post the lines of output (if any) that appear below what you just entered. You can do that by copy-and-paste as well. Omit the final line ending in “$”. No typing is involved in this step.
Step 2
Repeat with this line:
sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix)|edu\.mit|org\.(amavis|apache|cups|isc|ntp|postfix|x)/{print $3}'
This time you'll be prompted for your login password, which you do have to type. It won't be displayed when you type it. Type it carefully and then press return. You may get a one-time warning not to screw up. You don't need to post the warning. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.
Note: If you don’t have a login password, you’ll need to set one before taking this step. If that’s not possible, skip to the next step.
Step 3
launchctl list | sed 1d | awk '!/0x|com\.apple|edu\.mit|org\.(x|openbsd)/{print $3}'
Step 4
ls -1A /e*/mach* {,/}L*/{Ad,Compon,Ex,Fram,In,Keyb,La,Mail/Bu,P*P,Priv,Qu,Scripti,Servi,Spo,Sta}* L*/Fonts 2> /dev/null
Important: If you formerly synchronized with a MobileMe account, your me.com email address may appear in the output of the above command. If so, anonymize it before posting.
Step 5
osascript -e 'tell application "System Events" to get name of every login item' 2> /dev/null
Remember, steps 1-5 are all copy-and-paste — no typing, except your password. Also remember to post the output.
You can then quit Terminal.

Macbook Pro won't connect to wireless printer anymore suddenly

Suddenly my Macbook Pro won't connect to my HP Photosmart B210e Printer. I have tried adding it via IP address, it worked but I can't print anything. It says the printer is busy and idle? I updated the software and drivers. All other computers and devices in my home connect just fine. It is connected to our wireless router as is my laptop.
I have searched online and done all the solutions I could find and nothing is working. VERY frustrated as I have to log onto my Dell to print anything.
Thanks in advance for any help!
Kim

"It says the printer is busy and idle?"
System Preferences>print and Scan. What is the staus of the printer? Green light for idle or yellow light for in busy? Have you tried power down the printer and paowering it back up?

Macbook pro just stopped connecting to wireless internet.

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