TS2755 Cannot connect my I-Pad 1 to Comcast modem network with correct password. Other devices work fine.

I cannot connect my Ipad to a Comcast modem network with the correct password. Other devices work fine.

Some things to try first:
1. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
2. Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
3. Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
4. Go into your router security settings and change from WEP to WPA with AES.
5. Renew IP Address: (especially if you are droping internet connection)
    •    Launch Settings app
    •    Tap on Wi-Fi
    •    Tap on the blue arrow of the Wi-Fi network that you connect to from the list
    •    In the window that opens, tap on the Renew Lease button
~~~~~~~~~~~~~~~~~~~~~~~~~
iOS 6 Wifi Problems/Fixes
Fix For iOS 6 WiFi Problems?
http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
How to Fix: My iPad Won't Connect to WiFi
http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

Similar Messages

My wifi shows a strong signal but then i cannot connect to the internet (safari or apps). what is wrong? internet is working fine on my laptop.

My wifi shows a strong signal but then i cannot connect to the internet (safari or apps). what is wrong? internet is working fine on my laptop.

Is this a new issue with your iPad meaning that you have been able to connect to the Internet in the past?
If it worked before try rebooting your router - unplug it for about 30 seconds and then plug it in again.
Sometimes restarting the iPad is all it takes as well. Restart the iPad by holding down on the sleep button until the red slider appears and then slide to shut off. To power up hold the sleep button until the Apple logo appears and let go of the button.
You can also reset Network Settings - go to Settings>General>Reset>Reset Network Settings.Or go to Settings>WiFi>tap the blue arrow next to your network>Forget this Network. In either of those cases, you will have to rejoin your WiFi network and enter your password again.

When try to connect my iPod touch 4th gen to my house Wifi it won't connect, it used to work fine but now it dosen't work, but it does say that the internet is available, but when I tap on it it just loads. all other devices work fine.

When try to connect my iPod touch 4th gen to my house Wifi it won't connect, it used to work fine but now it dosen't work, but it does say that the internet is available, but when I tap on it it just loads. all other devices work fine.

Does the iOS device connect to other networks? If yes that tend to indicate a problem with your network.
Does the iOS device see the network?
Any error messages?
Do other devices now connect?
Did the iOS device connect before?
Try the following to rule out a software problem:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Power off and then back on your router
.- Reset network settings: Settings>General>Reset>Reset Network Settings
- iOS: Troubleshooting Wi-Fi networks and connections
- Wi-Fi: Unable to connect to an 802.11n Wi-Fi network
- iOS: Recommended settings for Wi-Fi routers and access points
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.
If still problem and it does not connect to any networks make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.
Apple Retail Store - Genius Bar

TS1398 Help! MacBook won't connect to the Internet on my network. Never had an issue on other networks, other devices work fine, i.e. iPhone/iPad. Says it's connected. Plugged in Ethernet and tried other browser. Called ISP and all good on their end.

Help! MacBook won't connect to the Internet on my network. Never had an issue on other networks, other devices work fine, i.e. iPhone/iPad. Says it's connected. Plugged in Ethernet and tried other browser. Called ISP and all good on their end.

You can't change it - just try aagain.
https://discussions.apple.com/index.jspa
Where you find these options:
Notebooks
MacBook Pro
MacBook Air
iBook
MacBook
PowerBook

TS1398 I have an ipad and just recently am not able to connect to home wireless wifi, the hourglass just spins when clicking the network to connect, other devices work fine

I have an ipad 2 and just recently am not able to connect to home wireless wifi, the hour glass just spins when clicking the network to connect, other devices work fine and can connect. Was able to connect at school, but not here at home all of a sudden, help?

iOS 6 Wifi Problems/Fixes
Fix For iOS 6 WiFi Problems?
http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
WiFi Connecting/Troubleshooting
http://www.apple.com/support/ipad/wifi/
How to Fix: My iPad Won't Connect to WiFi
http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
iOS: Connecting to the Internet
http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
Additional things to try.
Try this first. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
Another thing to try - Go into your router security settings and change from WEP to WPA with AES.
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
If none of the above suggestions work, look at this link.
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

Cannot convert webpages to pdf using Acrobat X Pro with IE9 and Windows 7, worked fine until a few m

Cannot convert webpages to pdf using Acrobat X Pro with IE9 and Windows 7, worked fine until a few months and updates ago

I tried your suggestion, not knowing that the direct pdf printer would also "save as" PDF, but when I try your suggestion and use the Adobe PDF printer that is a direct creation of the PDF from the browser (IE9), instead of the "black out" areas I get when I use the "Convert to" button, I get missing blocks of the resulting PDF, and only get the first 1/4 to 1/3 of the webpage.
Just to clarify, when I said I print the webpage and then scan, that is a work around I have to do if I need a scanned version of the way a webpage appears on a particular date and time, instead of the one step process I used to be able to do when Adobe Acrobat would actually convert the webpage to a pdf without blackout areas or, if I try your suggestion, blank spots with a partial webpage. But the idea was one I had not thought of and I appreciated the thought.
Yes, Acrobat was updated, and is updated, and was working fine until a few months ago, Win 7 and Office 32 bit versions, Office 2010

Cannot connect to iTunes or App Store on iPad Mini, but another iPad Mini works fine

Multiple iPad Mini's in one home. All connect to iTunes and the App Store except one. Used to work fine until recently. What's up?

Hi WinstonBaby,
If you are having an issue with connecting to the iTunes and App stores on your iPad, I would suggest that you troubleshoot using the steps in this article -
Can't connect to the iTunes Store - Apple Support
Specifically the section titled "Troubleshoot issues on an iPhone, iPad, or iPod touch."
Thanks for using Apple Support Communities.
Best,
Brett L

TS1398 my ipod touch worked fine on my wifi home network. After not using my ipod for a month or so, I cannot access the internet. All other devices work fine. Thus, its not my home wifi....I tried resetting...forgetting....nothing works...still cannot ac

hello - my ipod touch worked well until a couple of months of non-use. Now, I cannot access the internet thru my wifi. All my other devices have no such problem. I have tried resetting wifi, "forgetting network" turning wifi off and on....nothing works....can anyone help?

- Reset the iPod. Nothing will be lost
Reset iPod touch: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Power off and then back on the router.
- Reset networks settings: Settings>General>Reset>Reset Network Settings
- iOS: Troubleshooting Wi-Fi networks and connections
- iOS: Recommended settings for Wi-Fi routers and access points
Does the iPod see the network? Error message? Does the iPod connect to other networks?

Wifi connection unreliable only on my HP 23-h020a, all other devices work fine

We have just bought two brand new HP devices but are having major problems with the pavilion 23-020a. Basically the wifi connection is rubbish! All other devices in the house work fine and the PC itself is only a couple of meters from the modem and showing full connectivity. However we cannot reliably get internet connection when using wifi. Sometimes it's fine for a couple of minutes, some pages load, some don't, if my kids are in the middle if doing their home work when it comes to them moving on to the next page to do their online test, the page won't load and all their work is lost. This is totally unacceptable! If we connect using the Ethernet cable it's fine but to do that we have to have two meters of cable running across our sitting room. I need this resolved! We have tried all available wifi channels and nothing has helped. I hope someone here can! Thanks

Hello @Nzbeales,
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I understand that you have just purchased 2 HP devices and the HP Touchsmart ENVY 23-h020a All-In-One Desktop PC is having wireless issues and you would like to see it resolved. Given how new the computer is I would like you to please call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region. http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html. On a new unit you want to ensure that everything is working as it should and that any issues you may have are documented correctly.
I would like to thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
Dunidar
I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

Frustrated - Can't connect to router with laptop after disconnect, other devices work fine.

I have a RevI Actiontec router with dual antennas(not sure of firmware as I am not at home). My wife can be on her laptop all day, then when I come home with my IPad, it make her lose connection to the router. The router still connects to my iPhone 4 and iPad (both with iOS 6.0.1), but she is unable to connect to router at all. Everything continues to function normally on my Apple devices, so we are still connected to the internet. I have a laptop as well, and when this is happening, both of the laptops stop connecting, but the apple devices and our Toshiba TV and BluRay players continue to function normally. As a temp fix, I disconnect internet from my iPad and restart the router. It works until we try to run both at the same time.
I am mildly computer literate, though I know little about network setups beyond security, MAC filtering, and other slightly advanced setup stuff.
This is really frustrating and seems to be getting worse. We used it like this in our new house for several months before this started happening.

Also check to make sure neither of the devices are set to use a static IP address.
If a forum member gives an answer you like, give them the Kudos they deserve. If a member gives you the answer to your question, mark the answer as Accepted Solution so others can see the solution to the problem.
"All knowledge is worth having."

I purchased a new router and now can't connect my Iphone 4S to it. All my other devices work fine. How do I get the phone to connect. It finds the router but wants IP address: CHCP/BootP/STATIC. I am confused!!

I purchased a new router and can not connect my IPHONE 4S to it. All my other devices connect fine including my IPAD. HELP! I am not a techie!! I am a newbie

My guess is that when you see the router on your phone, you press the blue arrow on the right - thats why you see all the IP stuff. Don't press the blue arrow. Press further to the left. You should be prompted for a password then.

HT204400 no matter what i try, my apple tv says it cant connect to the network and it gives me error -3906. i have tried restart and reset, wifi, ethernet same error. all other devices work fine.

My apple TV has been working fine. Now it gives me error -3906 and says it cant connect to the network. it wont accept the password for my wifi. I have tried to restart and restore both the apple tv and my modem. still the same issue and same error message. any ideas?

Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
Additional things to try.
Try this first. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
Change the channel on your wireless router (Auto is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
Another thing to try - Go into your router security settings and change from WEP to WPA with AES.
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
If none of the above suggestions work, look at this link.
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

Cannot synch ipod to itunes, other devices work fine

One of my 3 ipods wont synch to itunes. I've gone thru the help/diagnostics. The device is detected and passes device connectivity tests but fails device sync tests "no ipod found." The test notes even show the device is working properly. When I hit synch, i get the windows pop up for an external device, it goes away before I do anyhting, it comes back again, and then the ipod attempts to synch but stops after a few seconds. I have the latest version of itunes 10.1.2. The device has space and plays correctly, it just isnt synching. The other nano and i touch work fine pulling in recently purchased tunes and songs. All of the playlists dont come over correctly but I can live with that. Would restoring the ipod help? Other ideas? Note, I recently moved my music library to this PC. I used music rescue to convert the tunes on this device back into itunes songs.

Sorry no answers but having similar issue with my son's nano. We got a replacement and was able to sync and now it's not recognizing it. Looking for ideas.

HT5569 cannot connect my i pad mini to my network

am stupid i guess can not connect to wi-i on my mini pad i have att u-verse which says i have wifi   what going on. lamar thanks

Some things to try first:
1. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
2. Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
3. Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
4. Go into your router security settings and change from WEP to WPA with AES.
5. Renew IP Address: (especially if you are droping internet connection)
    •    Launch Settings app
    •    Tap on Wi-Fi
    •    Tap on the blue arrow of the Wi-Fi network that you connect to from the list
    •    In the window that opens, tap on the Renew Lease button
6. Potential Quick Fixes When Your iPad Won’t Connect to Your Wifi Network
http://ipadinsight.com/ipad-tips-tricks/potential-quick-fixes-when-your-ipad-won t-connect-to-your-wifi-network/
~~~~~~~~~~~~~~~~~~~~~~~~~
Wi-Fi Fix for iOS 6
https://discussions.apple.com/thread/4823738?tstart=240
iOS 6 Wifi Problems/Fixes
How To: Workaround iPad Wi-Fi Issues
http://www.theipadfan.com/workaround-ipad-wifi-issues/
Another Fix For iOS 6 WiFi Problems
http://tabletcrunch.com/2012/10/27/fix-ios-6-wifi-problems-ssid/
Wifi Doesn't Connect After Waking From Sleep - Sometimes increasing screen brightness prevents the failure to reconnect after waking from sleep. According to Apple, “If brightness is at lowest level, increase it by moving the slider to the right and set auto brightness to off.”
Fix For iOS 6 WiFi Problems?
http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
How to Boost Your Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Boost-Your-Wi-Fi-Signal.h tm
Troubleshooting a Weak Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/Troubleshooting-A-Weak-Wi-Fi-Sig nal.htm
How to Fix a Poor Wi-Fi Signal on Your iPad
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Fix-A-Poor-Wi-Fi-Signal-O n-Your-iPad.htm
iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
How to Fix: My iPad Won't Connect to WiFi
http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Connect iPad to Wi-Fi (with troubleshooting info)
http://thehowto.wikidot.com/wifi-connect-ipad
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
Wi-Fi or Bluetooth settings grayed out or dim
http://support.apple.com/kb/TS1559
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

IMac connect to wi-fi but no internet but my other devices work fine

I need some advice. I have searched the helps forum before posting so please advice what I need to do. I have tried some of the solutions from the forums but not working.
My scnario...
iMac (latest version) was working real good until 2 nights ago. It still connects to the wireless router and once a while get internet but 98% of the time, impossible to load anything. It will load very quick after reboot the system then it slows down to eventually dead....and then several minutes, it loads very fast for few seconds and went dead and repeat the same. I follow the network diagnostic to turn off the router, wait and turn back on....same issue. Then, I thought it might be virus or melware cause I downloaded some Songs from unknown site. I then installed virus and malware remover but still not working. I then tried to login to my router to check out but I cannot even login cause it will even get to the login page. So I thought router is bad but it's not. My wife's iMac, PC laptop, Apple TV, iPad, and Android Phones are all able to connect with 30MB speed. I have tried to follow the DNS thing and still not working.
I use my iPad for AirPlay using same router so I am pretty sure the router is good and internet is good. So it only leave me with one thing, my iMac.
Any help is greatly appreciated.

Hello...I cannot say anything about the malware/virus question... BUT, I wonder if something got screwy with your Keychain. So I clicked on the Help in the menu at top of the screen, while I had system preferences open... There is a lot there to read.. I am in 10.7.4, so it may not exactly match what your machine says (do that search too, for precision).. but one thing that I think MIGHT be associated with your dilemma could be the following (did you set new passwords before when you did as BDAqua advised? That will do things...) the window I found:
Applications that use passwords require your permission to retrieve your password from Keychain Access. An application may present a dialog asking you to confirm access to your keychain. The message may contain several options:
Deny: Prevent the application from retrieving the password from your keychain. You need to enter the password manually.
Allow Once: Grant Access to your keychain this time only. You’ll be asked again the next time the application needs to access the password.
Always Allow: Allow the application to always retrieve the password without asking.
If you want to allow an application, such as Mail, to always access your keychain without asking for a password, select “Always Allow.”
Open Keychain Access, located in the Utilities folder in Launchpad.Open Keychain Access
If you don’t see keychains in the left column, choose View > Show Keychains.
Select a keychain, from the Keychains list. The application’s keychain would probably be in your login keychain.
Double-click the password in the Keychain window, and then click Access Control.
To allow all applications access to this password, select “Allow all applications to access this item.”
To control access to this password, select “Confirm before allowing access.”
To require the keychain password instead of the application password, select “Ask for Keychain password.”
To add individual applications that can access this password, click Add (+), and then navigate to the application you want to add.
Click Save Changes.

TS2755 Cannot connect my I-Pad 1 to Comcast modem network with correct password. Other devices work fine.

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