MBP can't find any wireless networks

I am running os 10.5.1, and last week or so, i was connecting to my network fine, but every so often i would join the network for about a minute, then losing connection, then getting it back for a second and going back off until my mbp required a restart, working for a while then screwing up in the same fashion. however it simply cannot see the network now. In the meantime my ibook running os 10.4.11 was, and still is, running as normal without any problem.
any ideas?
the modem's fine, everything is set up as it should be.
is there any way i can reset the airport settings? or like all the network settings?
Mitchypoo xxx

A lot of people are complaining. There is no answer to this problem. If you performed the upgrade installation of Leopard, I can suggest you go into System Preferences/Network/ and delete the AirPort network service (select and press the "-" sign in the lower left hand corner of the window), then redefine the AirPort network service (select and press the "+" sign in the lower left hand corner of the window). Reboot the computer and test it out.
Some have said that the migration from 10.4 to 1.5 corrupts these network services.
You might want to see if your router has the most current firmware available as well.

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PRINTER: HP LaserJet Pro CM1415fnw Color Multifunction Printer
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OWNED: Over 2 years with no problems
LOCATION/SET-UP: At my personal residence. All-in-one wireless router through cable company.
ISSUE: All of a sudden, printer cannot find any wireless networks. Nothing has recently changed in my service provider or equipment. I know that the router and internet is not the problem because our 2 smart phones and three laptops still connect. I've triend manually setting up the network using SSID and Keyphrase but still nothing.
HELP!
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View Solution.

I would perform a hard reset by removing the power from the entire machienethrough the powercord for thirty seconds. Following that I would reconnect the printer to the wireless network and set a static IP/
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Is your router plugged in? Do you have internet?
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Welcome to Apple Discussions
Sorry, but the 169.x.x.x IP address is internally generated by the iPod (and iPhone) and indicates that a network has been detected but no IP address has been issued. Your friends iPhone was not connected to your ad hoc network either - it connected to the internet through the 3G network.
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Hi
Have seen vaguely similar posts but couldn't quite follow. I've used my G4 powerbook to connect to a whole range of wireless networks using Airport and have never had a problem. However I was trying to connect to a wireless network at my local pub and couldn't do it. Airport couldn't find it, when I manually entered all relevant info (including password), it still wouldn't connect. Other laptop users, including others with Apples, don't seem to have a problem and they can't get my laptop to co-operate either. It can still find other wireless networks elsewhere with no trouble. Any suggestions as to what I'm doing wrong?
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Have the other apple users connected to the "hotspot" in the past? If so, their mac's may "remember" the settings of the network.
The network hotspot, as a security measure, may not broadcast the SSID and you may need to enter it manually, provided the hotspot "posts" it or gives it to your when you make a purchase. (I've seen a number of hot spots either post it near the register of give it to you after making a purchase to prevent users just accessing it without being a consumer of their products)
The hotspot may also encrypt the network, which they will usually provide as well.
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How do your Extreme and Express connect to one another? Wired Ethernet between the two, or wirelessly?
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AirPort troubleshooting guide
I open airport utility ... can not locate any of my wireless devises, airport extreme base,, airport express, apple tv, wifi printer.
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I am in an internet cafe and my macbook pro can't find the wireless network available at the cafe. I have used this network before. I have restarted my machine several times too. help please

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
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Locations: Automatic
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Click the Assist Me button
In the popup window click the Diagnostic button.
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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).
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http://www.netspotapp.comNetspot
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Mac OS X 10.6 Help: Solving problems with connecting to the Internet
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My iPhone 4 can't find any wifi networks after upgrading to iOS 6.0.1 and i can't downgrade what should i do ?
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I have the exact same problem.
It popped up on my 8gb iPhone (2.0.1) first time when i just purchased it. The Wheel spins as if it's searching for hotspots (and there are a lot of hotspots where i live). My MacbookPro finds them without any problems.
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*I have to say, I'm really glad you are trying to help guys.*
Well, router is almost on default settings, SSID is brodcasted and i'm not filtering MAC adresses. I tried changed channels, diffrent types of security or no security, no luck.
Guys, maybe i wrote it wrong, but this MacBook can't see ANY network. Around me there are 4-6 other networks which I'm able to see from other machines. So *problem is, this Macbook can't seen ANY network - not just mine.* BUT when i'm with this Macbook in office for example, or any other location, Wifi works....
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I found a log on the router, and it's happening all the time:
+Sunday February 28, 2010 12:52:29 Unrecognized attempt blocked from 77.49.167.124:10179 to 82.119.105.172 UDP:51413+
+Sunday February 28, 2010 12:52:39 Unrecognized attempt blocked from 84.74.154.198:51104 to 82.119.105.172 UDP:51413+
+Sunday February 28, 2010 12:52:41 Unrecognized attempt blocked from 85.228.116.143:30977 to 82.119.105.172 UDP:51413+
+Sunday February 28, 2010 12:52:45 Unrecognized attempt blocked from 82.19.214.16:49713 to 82.119.105.172 UDP:51413+
+Sunday February 28, 2010 12:52:51 Unrecognized attempt blocked from 79.5.189.206:42386 to 82.119.105.172 UDP:51413+
+Sunday February 28, 2010 12:53:01 Unrecognized attempt blocked from 82.231.42.177:48944 to 82.119.105.172 UDP:51413+
+Sunday February 28, 2010 12:53:03 Unrecognized attempt blocked from 150.65.37.20:35339 to 82.119.105.172 UDP:51413+
+Sunday February 28, 2010 12:53:08 Unrecognized attempt blocked from 83.34.238.95:27314 to 82.119.105.172 TCP:38481+
+Sunday February 28, 2010 12:53:09 Unrecognized attempt blocked from 83.34.238.95:27314 to 82.119.105.172 TCP:38481+
+Sunday February 28, 2010 12:53:09 Unrecognized attempt blocked from 89.135.92.244:22231 to 82.119.105.172 UDP:51413+

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I can now tell you all this is the well-known HARDWARE fault whereby the wireless antenna screw comes loose.
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Hello there @Rico6952 , welcome back!
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R a i n b o w 7000I work on behalf of HP
Click the “Kudos Thumbs Up" at the bottom of this post to say
“Thanks” for helping!
Click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution!

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