Dear Phan, first u have check IE browser setting. goto tools ---> internet Option --> select connections --> add connection if u connect with LAN(Ethernet cable) so u have go to lan setting and insert your net provider ip with port number. if not so add dialup coonection. i hope u should do.

Nope...that didn't work. I have a dell inspiron 1525 (i think)

There is a button on either side of my computer one is the power button and the other is WiFI. I'm not sure but Isn't the wifi supposed to be on? I thought it was before but it isn't now.

OMG, Mine just started and it is going on Day two.... how did you resolve this problem?

I am having the same problem all of a sudden. Does anyone know what to do?
I can only get Yahoo messenger but not IE nor Firefox, so I know my internet connection is actually working. I've had the laptop since May. I actually have never got Firefox to work and have tried so many different things. Now today all of a sudden my IE won't work. Please help!

Same issue on my laptop. Windows Vista and Norton Anti-Virus. I have a solid connection, I have successful pings to other computers on my network and on the internet. I could not ping the laptop however. IE comes up with blank pages.

I uninstalled Norton Antivirus and it works fine now. Got my internet back and can successfully ping the laptop.

Time to find another anti-virus it seems.

Why just stop working i i dont use norton Antivirus!:( what should i do??? need help!!!!!!!!

I am also running Vista and Norton Antivirus 2009. Starting in March, I would experience the same problem. All of a sudden, a complete loss of network access. I couldn't even see devices on my local area network. Restarting the computer would resolve the problem, but the problem has occurred 9 other times since then. I have tried just about everything including installing a second network card; replacing the network cable; and changing the port on the switch that connects my PC to the rest of Network. I uninstalled NAV yesterday and reinstalled it today. Hope that does the trick. If not, I'll be looking for another antivirus program.

Hey, has anyone found the solution to this yet? My boyfriends computer (Dell 1525) is doing the exact same thing. Just happened all of a sudden 2 days ago, it also does a disk scan when you start it up...

Any help would be much appriciated :)

Having the same problem on my laptop, got strong signal, cant get connected through mozilla or ie. gonna try deleting norton and seeing what happens. tried doing a system restore but it wasnt successful. if deleting norton doesnt work, i have no idea what else to do.

Hello,

I've got the same problem too.
I've Vista, I'm connected to the wireless and to internet too (from the connection center I can see all is working fine), but both Internet Explorer and Firefox are not able to browse (on the other hand, Skype is working...).
I've already disinstalled Norton Antivirus but the problem persists... can you help me, please?

Many many thanks,

Bob

I am having the same EXACT problem as Phan. All the other computers in the house are working fine. I also have an Inspiron 1525.

I used system restore and it worked fine for one day and then went back to not working again.

Phan: I want to know how you fixed your problem.

I am starting to wonder if this is a Vista issue. In the task scheduler, under Microsoft --> Windows --> Network Access Protection there is a task called NAPStatus UI. It will run Network Access Protection upon logon or after a system event 18. NAP is intended to keep unhealthy computers off a network. Perhaps pending installation of updates (system event 18) is triggering my loss of network access. Looking at my system event log, there appears to be a strong correlation to system event 18s and my encounters with lost network access. To test this hypothesis, I disabled one of the two triggers for this task. There must be another piece to the puzzle however. There are five other Vista machines on either my home or work networks that do not encounter this problem.

Hi, this is what I did on my Acer 4520 laptop. And it sure did solved my problem. But I have to warn you that you need to backup all of your important files first. For your information, i did try to do all the things being said in this forum, but unfortunately it didn't work on my laptop. So, to save a lot of unproductive time wasted. I did the following steps: Again Back up those important files!!!

1. Have your copy of the Operating System and device drivers of your machine. If you have a recovery disk, MUCH BETTER!!!
2. REFORMAT your hard drive. Reinstall the OS and Device drivers.
3. Setup your internet connection. Hopefully you can browse the internet now.
4. Make sure you INSTALL first the Anti-virus Program before surfing the net. UPDATE it ASAP!!! in my case I have 2 different Antivirus program running at the same time. (Immunize/give flu shots to your system first :-)
5. At the same time Check the security status of your OS. Specially the firewall. UPDATE IT ASAP!!!
6.Update your OS using (I'm using Windows Vista Home Premium) windows update program.
7. download other browsers, like firefox, opera, etc. IE8 seems to be promising...hopefully. Firefox is my default browser now.
8. create a system restore point.

That's it! I hope it will work on your machine too.