My Macbook Pro i7 lost wifi connection

Hi, my Macbook Pro i7 lost wifi connection. I don't know why, but my connection is lost every time. I've other PC, tablets etc. (Windows, iPhone, iPad) and all is ok. Only Macbook Pro i7 have this problem. Some help?

Well if then, if it is two weeks old, I suggest a trip to the Genius Bar at your Apple Store... it may well be a warranty issue.
I am sorry I was not able to be any help at all besides WANTING to!
Were you running your other wireless machines at the SAME time? And you had nobody in the house using mixers (for drinks or cake and cookie batter) or hair dryers? Clothes dryers....?
While thinking of Brasil and weather- I saw on our public TV station a few months ago- a story about a fishing boat, I think south of Rio de Janeiro, who encountered a hurricane- and only one fellow lived. Ouch!
Report back if you can save the link to the page, or the emails of the answers, to tell what the Apple store said...

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see if there is anything for you.
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Macbook pro retina display wifi connection problem.

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I have posted my solution i.e. update airport utility software. Ocourse you needa working internet connection for that!
I have a 27 inch imac, mac book pro, mac book pro with retina display, iphone 4, iphone 4s, 2 x iphone 5. Each device was showing erratic internet connections at some point in time or the other.
I just updated Airport Utility Software. You can find it in Applications/Utilities. When you click on Airport utilities, it opens a window with 2 icons. The bottom icon will look like your airport express. click on that and then you will get info on the right. If , I repeat if, your Airport utility software requires updation, you will be prompted in the info box. Click that and then you will be fine.
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Help needed to troubleshoot why my MacBook Pro repeatedly drops wifi connection

We run Mac & PC laptops, iPhone, iPad on occasion, with ATT DSL, 2Wire 2701HG-B Router. First 6 months of enjoying my Mac, no trouble. Then things started to go south. Been dealing with this problem of dropped internet connection for over a year. Got a new router--the 2Wire 2701, finally got a new phone line put in from the outside to inside. It now seems like the MacBook Pro drops the signal far more than the PC. It seems worse when I'm at my desk, which is only a room away from the router. It can drop the signal about every 3rd or 4th click on the internet. The Networks Diagnostics will show red buttons on the Server and Internet. Been testing other areas of the house, and find it seems better in these other areas, dropping far less. Hard to tell, because the problem comes and goes, like the sun. iPhone has dropped connection on occasion. iPad has occasional slow download of YouTube. Neither of those are troubling.
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Which os are you using?
Change your router channel. Sometimes this is all you will have to do.
Power cycling the router. Read the router's user manual or contact their tech support for instructions.
System Preferences/Internet & Network/Network
Unlock the padlock
Locations: Automatic
Highlight Airport
Click the Assist Me button
In the popup window click the Diagnostic button.
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Place a check mark next to "Remember networks this computer has joined." Click the OK button and lock the padlock. Restart your computer.
http://support.apple.com/kb/TS1920 Mac OS: How to release and renew a DHCP lease
No internet connection (wireless)
Check to see if an extra entry is present in the DNS Tab for your wireless connection (System Preferences/Network/Airport/Advanced/DNS).
Delete all extra entries that you find.
Place a check mark next to "Remember networks this computer has joined."
Other resources to check into:
Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6
Netspot
How to diagnose and resolve Wi-Fi slow-downs
Pv6 troubleshooting
Mac OS X 10.6 Help: Solving problems with connecting to the Internet
What Affects Wireless Internet?
Solutions for connecting to the Internet, setting up a small network, and troubleshooting

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http://support.apple.com/kb/PH13797

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Random35,
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Back up all data before proceeding.
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Mon Macbook Pro perd constamment la connection au wifi...que dois-je faire ?

J'en ai aucune idée ! J'y connais rien a ces trucs...
Ceci sont les infos generales de mon Ordi :
Model Name: MacBook Pro
Model Identifier: MacBookPro8,1
Processor Name: Intel Core i7
Processor Speed: 2,7 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache (per Core): 256 KB
L3 Cache: 4 MB
Memory: 4 GB
Boot ROM Version: MBP81.0047.B24
SMC Version (system): 1.68f98
Serial Number (system): C02F46K0DH2H
Hardware UUID: 2C283FA4-3387-582A-B9A3-BF387C473CFA
Sudden Motion Sensor:
State: Enabled
Saurais tu me guider et m'aider a resoudre le probleme ?

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Under Home or Work (current profile) / Network Discovery.
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Say thanks by clicking the Kudos Thumbs Up to the right in the post.
If my post resolved your problem, please mark it as an Accepted Solution ...
I worked for HP but now I'm retired!

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I know this is a long shot... but I figured I would give it a try.
My macbook pro suddenly does not connect to the internet via ethernet cable. Please bear with me, as I am not very tech-savvy - I will try my best to describe the symptoms!
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Change your router channel. Sometimes this all you will have to do.
System Preferences/Internet & Network/Network
Unlock the padlock
Locations: Automatic
Highlight Airport
Click the Assist Me button
In the popup window click the Diagnostic button.
System Preferences/Network- Unlock padlock. Highlight Airport. Network Name-select your name. Click on the Advanced button. Airport/Preferred Networks-delete all that is not your network.
Place a check mark next to "Remember networks this computer has joined." Click the OK button and lock the padlock. Restart your computer.
http://support.apple.com/kb/TS1920 Mac OS: How to release and renew a DHCP lease
No internet connection (wireless)
Check to see if an extra entry is present in the DNS Tab for your wireless connection (System Preferences/Network/Airport/Advanced/DNS).
Delete all extra entries that you find.
Place a check mark next to "Remember networks this computer has joined."
How to diagnose and resolve Wi-Fi slow-downs

My Macbook Pro i7 lost wifi connection

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