No Internet connection after upgrade to Win 10 with Dell XPS Fixed

After upgrading from windows 8.1 to 10 on my dell I had no internet connectivity.The answer is that the update reset the driver to default mode. Specifically bandwidth.Go to control panel / device manager / WiFi cardgo to device / properties - Advancedselect bandwidth and change from 20 only to 20/40 auto.

It might help to reset the connection settings on your Mac using these steps one at a time until the problem is resolved, recognizing that, depending on your problem, not all of these steps will make sense:
1) Use the AirPort/Wi-Fi menu bar item to turn AirPort/Wi-Fi off, then on again.
2) Try to select your Wi-Fi network from the AirPort/Wi-Fi menu.
3) In the Network panel of System Preferences delete the AirPort/Wi-Fi item from the left column, then add it back.
4) In the same panel as (3), define a new location and see if you can make that work.
5) In the same panel, select the AirPort/Wi-Fi connection item, click the "Advanced" button, select the "TCP/IP" tab, then click "Renew DHCP Lease". Note that the fix this step implements may be temporary.
6) In the folder /Library/Preferences ( _not_ <yourhomefolder>/Library/Preferences), move the folder SystemConfiguration onto the Desktop, then restart your computer. See if you can now make your AirPort connection work.
These steps may not help, but they'll only take a couple of minutes to try. Before you try these, if you have any special network settings on your Mac for things like DSL credentials, note all your network settings, because the latter steps will destroy them. If you got all the way to the last step, if things don't work any worse than before, you can trash the saved SystemConfiguration folder.

Similar Messages

MacBook Pro drops Wi-Fi connection after upgrading to 10.6.5. Fixed!

MacBook Pro drops Wi-Fi connection after upgrading to 10.6.5. Airport says no IP is detected then suddenly reconnects?
This has been a problem I’ve been troubleshooting for the last month. I’m new to the Mac family and have loved my experience up until this point. I was under the impression that mac’s are supposed to be so user friendly that even your grandmother could use one with out having any technical knowledge. I mean I shouldn’t have to be deleting drivers or reformat my mac because of an OS update glitch? (That’s what the guy at the Genius Bar told me to do.) What I refused to succumb to was that I’m really good with computers. I get at least a phone call every other week from someone asking me for tech support. So I’d like to think that nothing I’ve done to the system would have caused this anomaly.
After numerous attempts of troubleshooting and researching forms I believe I’ve discovered a solutions that seems to be working for me.
Here are the steps I took to create a consistent connection to my Wi-Fi. I believe it was a combination of all these steps to create success.
1.) Changed my router to use G Wireless Only. (I’m assuming this removed any unnecessary frequencies to allow G to broadcast stronger?)
2.) Did a scan on the other networks in my area to find out what channel everyone else was broadcasting on. Copy and past the text below into a terminal window.
sudo ln -s /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resourc es/airport /usr/sbin/airport
This will allow you to simply type “airport” in the terminal window to execute the command.
Type airport –s
This will display all the networks in your area and what channel they are broadcasting on.
3.) Changed my router to use a channel that no one in my area was using. (This helped to make my network stronger and free of interference.)
The last steps will help your home network improve but these next steps I believe helped fix any install errors caused maybe by the 10.6.5 update on my mac.
4.) Boot your Mac into safe mode by holding down the shift key while booting.
5.) Open System Preferences and Click on Network.
6.) Click the drop down menu from Locations at the top of the screen. Click edit locations..
7.) Create a new location by clicking the + and give it a new name.
8.) Delete the old location by clicking on the old locations name and click the – to remove.
9.) Reboot
10.) Open System Preference and click on Network.
11.) Click on the settings sprocket next to the + and – and click on Set Service Order…
12.) Drag Airport to the top of the list of devices then click Ok.
Now this last step is what seemed to eliminate the issue. I hardcoded my IP address to my network. This way my computer will always use the same IP and not have to search.
13.) Click on Advanced under Network.
14.) Click on TCP/IP. Click on the drop down for Configure IPv4 and change it to Manually.
15.) Fill out the fields with your IPv4 Address: 192.168.1.1xx (x=whatever number) Subnet Mask: 255.255.255.0 Router: 192.168.1.1 (All of these settings are pretty standard for most home networks.)
16.) Click on the drop down for Configure IPv6 and change it to Off.
17.) Next click on the DNS tab at the top.
18.) Click the + to add a DNS Record.
To find your DNS Server open a Terminal window by launching Applications --> Utilities --> Terminal
Then Type cat /etc/resolv.conf
(There is a space between cat and /. Without it you’ll get no such file or directory.)
This should return two addresses. Your ISP’s DNS Servers.
19.) Add both records to the DNS and click Ok.
20.) Click Ok then under Network Click Ok.
21.) Reboot router then Mac
22.) Fixed my connection issue
The symptoms I experienced eluded me to believe that something with the DHCP is going into an idle then disconnecting. Before when DHCP was set to automatically assign the network signal would time out then searchers for a new IP resulting in Airport displaying No IP is detected. By setting my IP to a fixed address I still notice a slight drop in bandwidth at moments but because of the assigned IP I never loose connection. I can now stream video, play games, chat all without getting disconnected.
I believe this fix will work for my home network but I also noticed this issue at work so for each location that I connect for the time being I’ll create each there own location and hardcode the IP address to that network. I’ve been reading that 10.6.6 is coming soon so maybe this will be resolved for good in the next update.
Let me know if this helps or if you have any questions.
Best of luck.
Message was edited by: erockdabass
Message was edited by: erockdabass

I have been having the same issue for the last two weeks. No real indication as to why it ever began other than I had turned off my router and Airport Extreme Base Station off for a weekend while I was away from my place.
iPad, iPhone, iPod Touch, all have no issues at all with my Airport Extreme Base Station. Can stay connected throughout my living room, bathroom, bedroom, no issues whatsoever.
My 5 month old MacBook Pro 2.66 GHz Core i7 Airport is sometimes perfect, able to connect, DHCP, and browse without issue. Then, for no reason, I won't be able to join my wireless network, or when I can join, I can't pick up an IP address. And then it will connect, pick up and IP, and then it won't browse. No real rhyme or reason to when this will happen, or when it works.
I thought that it was an issue with my MacBook Pro, but then my sister visited with her brand new MacBook Pro 2.26 Intel Core 2 Duo, and while a month ago she was able to connect, DHCP, and browse without issue, this weekend she had all of the same issues I was having.
My XBOX 360 and MacBook Pro have absolutely no issues with the wired connection. Only my WAN seems to have this issue.
Did you ever find anything more to this?

Problems with your internet connection after upgrading to iOS 7.1.2

After upgrading to iOS 7.1.2 on my iPad Retina display does not connect to the internet more. Recognizes the Wi-Fi network but can not connect to the internet. The same thing happened to my wife's iPhone 5s, while my had no problems ...

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 drooping 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/
~~~~~~~~~~~~~~~~~~~~~~~~~
Fix WiFi Issue for iOS 7
http://ipadnerds.com/fix-wifi-issue-ios-7/
iOS 6 Wifi Problems/Fixes
Wi-Fi Fix for iOS 6
https://discussions.apple.com/thread/4823738?tstart=240
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/
~~~~~~~~~~~~~~~~~~~~~~~
iPad: Issues connecting to Wi-Fi networks
http://support.apple.com/kb/ts3304
How to Boost Your Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Boost-Your-Wi-Fi-Signal.hmL
Troubleshooting a Weak Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/Troubleshooting-A-Weak-Wi-Fi-Signal.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
10 Ways to Boost Your Wireless Signal
http://www.pcmag.com/article2/0,2817,2372811,00.asp
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.
Some Wi-Fi losses may stem from a problematic interaction between Wi-Fi and cellular data connections. Numerous users have found that turning off Cellular Data in Settings gets their Wi-Fi working again.
You may have many apps open which can possibly cause the slowdown and possibly the loss of wifi. In iOS 4-6 double tap your Home button & at the bottom of the screen you will see the icons of all open apps. Close those you are not using by pressing on an icon until all icons wiggle - then tap the minus sign. For iOS 7 users, there’s an easy way to see which apps are open in order to close them. By double-tapping the home button on your iPhone or iPad, the new multitasking feature in iOS 7 shows full page previews of all your open apps. Simply scroll horizontally to see all your apps, and close the apps with a simple flick towards the top of the screen.
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

Loss of internet connectivity after upgrading to windows 8.1

Hi, After upgrading to windows 8.1 from windows 8 i am experiencing major problems , loss of internet connectivity for no reason both I.E. and G/CHROME are now taking an age to open there are no virus issues as far as i can see.
I have uninstalled and re-installed windows 8.1 about four times over the past 9 months or so and the same thing happens after all the updates are in it runs like a dream for say 6weeks or so then i get the same faults as described above then i uninstall/ re-install ok for 6 weeks .
I would apprieate any help or advice thanks

Hi @BMATH
Thank you your query.
I understand that after updating to Windows 8.1 about every 6 weeks you loose wireless connectivity for no reason and the web pages are very slow to open. If you uninstall and reinstall Windows 8.1 it works fine again for about the same amount of time. You have done this about 4 times with the same result each time.
Do you know if there is any changes at that time , perhaps an update?
You stated you do not believe you have any viruses. Just to be sure here are two links that will help confirm that.
Microsoft Malicious Software Removal Tool
Microsoft Safety Scanner
After updating to Windows 8.1 have you checked for Windows updates?
Have you ran HP Support Assistant ?
Here is a link to Troubleshooting Wireless Network and Internet (Windows 8) that may also help.
If the issue should remain please contact HP support for assistance.
Please call our technical support at 800 474 6836. If you live outside the US/Canada Region, please click the link below to get a support number for your region.
World Wide Phone Support
Best of Luck!
Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

No internet connection after upgrade from windows 8 to windows 8.1

I have upgraded my operating system from windows 8 to windows 8.1, I also updated windows 8.1 after the system upgrated. I found there is no access to internet, although I have full wifi signal. I tried to conncet to the router via ethnet cable, but it still has no internet connection. However, I can see other computers at homenet via wifi. I have seen some questions in the Forum regarding wifi failure after upgrating to windows 8.1, and I tried to uninstall all my drivers (LAN and wireless) of network adapter, and re-install the latest drivers from HP website at http://support.hp.com/gb-en/drivers/selfservice/HP-Pavilion-Sleekbook-15-b000/5296234/model/5311051#Z7_3054ICK0KGTE30AQO5O3KA30R1(I tried the Ralink ones as I remembered the old drivers are Ralink), but it does not work. Please could you help?

Hi @Koala76 , Thank you for visiting the HP Support Forums and Welcome! I have read your post on your HP Pavilion Sleekbook 15-b052ea and Windows 8.1 causing issues for you when trying to connect to the wireless. Try opening Device Manager, clicking Control Panel, clicking System and Maintenance, and then clicking Device Manager. In Device Manager, locate the network adapter, and then double-click the device name. Click the Driver tab, and then uninstall everything in the list except the Realtek and the Ralink. Remove any USB devices and Ethernet cables that are connected. Restart the computer. After you restart the computer, please use the HP Support Assistant. The HP Support Assistant has a wireless connectivity troubleshooting tool inside. Here is a screen shot of the Internet and Security tool that will help you diagnose Internet Connectivity. I hope this helps! Thanks.

Apple programs will not recognize Internet connection after Tiger upgrade

In January, I posted the question below. I wanted to update it, but this site has archived it and will not allow responses. In the hope that I may help someone else, I am repeating my question, now that I have the answer.
===============================================
ORIGINAL PROBLEM
Last week, I upgraded from 10.3.9 to Tiger. Ever since then, I have had trouble using Apple's programs that require internet usage: Safari, iTunes, Software Update, etc. All of these programs think I am not connected to the Internet. But I am; I can use Netscape, Internet Explorer, and other non-Apple programs on the web.
Furthermore, it's not consistent. Sometimes Safari will recognize the connection. I'll be using Safari, looking up websites, when suddenly it will quit connecting, giving me the message, "Cannot connect to the server," no matter what server it is, even apple.com (so I have to use Netscape to access my .Mac and this Support screen).
How can I resolve this?
==============================================
The problem was that my Earthlink Access software was setting a proxy on my connection. Netscape & Firefox worked because they ignore any proxies; the Apple programs (plus Shiira and Internet Explorer) didn't connect because they use the proxies.
Why did it sometimes work? Well, if I first used Safari to go to a secure website of my bank, somehow that opened up the connection and then I could continue to use the Internet and Internet based programs like iTunes and widgets. However, if I tried to use an Internet-based program before going to the secure site, then it wouldn't work.
After months of phone calls and e-mails and sending data packets and all such stuff with Apple Care, they finally stumbled upon this answer: Uncheck the proxy box. And that did it. At first I had to uncheck it every time I started up the computer, but now it stays unchecked and I can use my Apple programs with no trouble.
I just wanted to share this with you in case you also had trouble with Internet connections after upgrading to Tiger, because I did see several other people had this same trouble.
Movable flat-screen iMac G4 Mac OS X (10.4.6) 1.25Ghz processor, 256 MB memory (DDR SDRAM)

For the record, could you state each Proxy box you ended up unchecking please? I'll attempt to submit a user tip with credit to you for finding this solution.

I'm having problems with my internet connection after installing OS X Lion. Is this a known problem or just a local problem?

I'm having problems with my internet connection after installing OS X Lion. Is this a known problem or just a local problem?
After +/- 10 to 15min my connection is gone.
Does anyone have a sollution?

Lots of people are having the same problem, you're not the only one, belieeeeve me.
Just Googling the problem gets you tons of people complaining about the same thing, SOMETHING is up with Lion what wasn't happening with Snow Leopard. i just bought a new Imac and it CAME with Lion, so i started experiencing this internet dropout immediately.
It's been going on for the most of a year it looks like (at least by the dates from the threads i've been reading)
So your best bet is to fiddle with the System Preferences and read what other people have used to make theirs work. i'm doing that myself right now. I already posted a similar thread last night trying to figure out why my connection kept on dropping, i got a reply which linked me to a site. i followed the instructions there, so far so good, but i'm just being cautiously optimistic.
i'm gonna call Apple today and see if they've found anything, though seeing as this is a problem right out of the box there may not be an immediate solution. Good luck hunting for a solution :3
Site:
http://osxdaily.com/2011/11/06/lion-wi-fi-problems-solution-mac/?utm_source=feed burner&utm_medium=feed&utm_campaign=Feed%3A+osxdaily+%28OS+X+Daily%29&utm_conten t=FaceBook

Firefox would not connect after upgrade. Did system restore (XP) and not firefox wont even start

Firefox would not connect after upgrade from verion 6 to version 7. Did system restore (XP) and now firefox wont even start

Sometimes Firefox will hang during startup or shutdown, and still be running invisibly in the background. Usually in that case, you need to "kill" it either by restarting Windows or using the Windows Task Manager. It sounds as though you are familiar with opening the Processes tab, finding firefox.exe, and using End Process.
If you use an advanced firewall or other security software that tracks which programs are permitted to use the internet, please see these articles:
* [[Fix problems connecting to websites after updating Firefox]]
* [[Configure firewalls so that Firefox can access the Internet]]
A couple of other suggestions:
(1) Can you start Firefox in its Safe Mode? Hold down the Shift key when starting Firefox. You should get a two-button dialog. Click "Start in Safe Mode" (''not'' Reset). Any difference?
(2) In case your regular software missed something that is interfering with Firefox, try the scanning and clean-up tools listed in this article: [[Troubleshoot Firefox issues caused by malware]]

After upgrading from Win 8 to 8.1 my DVD RAM GT80N SATA Drive is no longer working

After upgrading from Win 8 to 8.1 my DVD RAM GT80N SATA Drive is no longer recognizing discs. When I first put a disc in the drive runs for a bit and then stops. I've tried updating the driver but it says it has the most current driver. Under manage, it does not show any error codes and it says it is working correctly. I've looked at the regedit and it does not have any of upper and lower filters. I've tried disabling, rebooting, and reenabling. What am I missing? Another issue I've had since upgrading is that my network adapter needs reset several times a day in order to remain connected to wifi.

Hey hvbnfrgvn,
Thank you for the information on your HP Pavilion g7-2270us Notebook PC.
I suggest following the steps in this document for Drive Cannot Read Discs (Windows 8).
If your CD/DVD Drive Is Not Detected (Windows 8), follow the steps in this document.
I hope this information helps, please keep me posted on how it goes.
Best of luck and have a great day!
I worked on behalf of HP.

I cannot connect after upgrading Firefox. I work in corporate environment and cannot change security settings. Why this feature was not tested before upgrading to current version?

I cannot connect to ANY web sites (for example, yahoo, google, etc.

[https://support.mozilla.org/en-US/kb/Cannot%20connect%20after%20upgrading%20Firefox Cannot connect after upgrading Firefox]
see also [https://support.mozilla.org/en-US/kb/Firewalls Firewalls]
thank you
Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

No wireless connections after upgrading to leopard!

Lost all wireless connection after upgrading to 10.5 osx. Getting frustrated with the upgrade after spending two hours on the phone with apple tech and was told that it was a third party issue! Able to access wireless with security turned off, but once I set sec password (WAP) no connection. What is strange is that I can receive and send email but no browser. All other Mac's/PC's connect fine. Other mac's have not been upgrade! Does anyone have any answers???

see my post here: http://discussions.apple.com/thread.jspa?threadID=1244216&tstart=0
it might help you.

MBA loses internet connection after waking from sleep

I have a new Macbook Air running Mavericks and new 802.11ac Airport Extreme router.
My problem is that the MBA drops the internet connection after waking from sleep. I tried the solution offered by the OP, but it didn't work.
In my case, here's what I have to do to get a connection again. I open the Network preference pane, and then choose "Assist me..." and then "Diagnostics". Invariably it will show a green light beside Wi-Fi, Wi-Fi Settings and Network Settings. I have 5 bars showing in the WiFi menu bar icon. But ISP, Internet and Server will be yellow.
When I go through the steps prompted by the wizard, the ISP/Internet/Server lights turn green on the third screen where I select the wireless network I want to join.
It seems as if it's connecting to the WiFi network when it wakes from sleep, but losing the internet connection?
Note: I have a new iMac as well running Mavericks and don't have this problem with it.

The warranty entitles you to complimentary phone support for the first 90 days of ownership.
If you bought the product in the U.S. directly from Apple (not from a reseller), you have 14 days from the date of delivery in which to exchange or return it for a refund. In other countries, the return policy may be different. If you bought from a reseller, its return policy applies.

ISCSI initiator not connecting after upgradation

HI,
iSCSI initiator not connecting after upgradation from windows 2003 STD to windows 2008 STD R2 server, upgradation was successfully completed, except Microsoft iSCSI initiator connectivity, the initiaor interface show it as 'reconnecting'....!!!!!
Kindly guide on this.
Thanks in Advance

HI Shaon Shan,
Thanks for the info.
While searching for the file names start with iscsi in c:\windows\system32 folder the file version is 5.2.3790.3825 in working windows 2003 server.
Recently I've downloaded (Not yet installed) iSCSI initiator for Windows 2008 from Microsoft website in that iSCSI initiator file version shown as 6.3.4.1, instead of using inbuilt Microsoft iSCSI initiator in W2K8, shall I try installing the downloaded
version,
because when I checked in Windows 2008 (Upgraded version) the iSCSI file version remains the same as 5.2.3790.3825 which was found in windows 2003.
Post to our previous discussion
While I'm trying to install the new iSCSI initiator for Windows 2008 downloaded from Microsoft website, it shows some error "Setupcould not find the update.inf file needed to update your system" then I've updated my server, but no luck still showing the
same....!!!!

I've lost internet connection after a power outage; how do I restore?

I've lost internet connection after a power outage; how do I restore?

Check with your internet provider for help. Your modem or router could have been damaged if they did not come on after the outage. If your modem and router look OK all you should have to do is restart your iMac.

HP Compaq CQ60-215dx: sound will not switch to headphones after upgrade to Win Vista 64bit Ultimate

HP Compaq CQ60-215dx: sound will not switch to headphones after upgrade to Win Vista 64bit Ultimate
what can I do?

Uninstall the current audio driver and install it again.
other option is trying driver from microsoft update.
Pavilion DV2922TX, XP-SP3 32bit, Intel T5750 2.0Ghz, Nvidia Geforce 8400M GS with 128MB, 4GB 667 DDR2, 250GB HDD

No Internet connection after upgrade to Win 10 with Dell XPS Fixed

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