Hi,
1. Were there any changes made on the computer prior to the issue?
2. Do you have a wired or wireless network connection?
3. Do you get any error message? If yes, what is the complete and exact error message?
If you are using wireless connection try Method 1.
Method 1:
Disable IEEE 802.1X authentication.
This issue may occur if the Enable IEEE 802.1X authentication for this network check box is selected. If this check box is selected, but there is no server to authenticate against, the connection is disconnected. If you reestablish the wireless network connection, it disconnects again after a short time.
1. Were there any changes made on the computer prior to the issue?
2. Do you have a wired or wireless network connection?
3. Do you get any error message? If yes, what is the complete and exact error message?
If you are using wireless connection try Method 1.
Method 1:
Disable IEEE 802.1X authentication.
This issue may occur if the Enable IEEE 802.1X authentication for this network check box is selected. If this check box is selected, but there is no server to authenticate against, the connection is disconnected. If you reestablish the wireless network connection, it disconnects again after a short time.
To disable IEEE 802.1X authentication, follow these steps:
a) Click Start, type ncpa.cpl, and then hit Enter.
b) Right-click your wireless network connection, and then click Properties.
c) Click the Wireless Networks tab.
d) Under Preferred networks, click your wireless network, and then click Properties.
e) Click the Authentication tab, click to clear the Enable IEEE 802.1X authentication for this network check box, and then click OK two times.
Method 2:
You may try the steps in the link to create a new network profile.
Create or modify network profiles
http://windows.microsoft.com/en-us/windows7/Create-or-modify-network-profiles
Method 3:
If the issue persists you may try the steps in the link and check.
Wired and wireless network connection problems in Windows
http://windows.microsoft.com/en-US/windows/help/wired-and-wireless-network-connection-problems-in-windows
Method 4:
If the issue still persists you may try to reset Internet Protocol.
How to reset Internet Protocol (TCP/IP)
http://support.microsoft.com/kb/299357
Method 5:
If the issue still persists check if the service is set to automatic or not.
a) Click Start, type ncpa.cpl, and then hit Enter.
b) Right-click your wireless network connection, and then click Properties.
c) Click the Wireless Networks tab.
d) Under Preferred networks, click your wireless network, and then click Properties.
e) Click the Authentication tab, click to clear the Enable IEEE 802.1X authentication for this network check box, and then click OK two times.
Method 2:
You may try the steps in the link to create a new network profile.
Create or modify network profiles
http://windows.microsoft.com/en-us/windows7/Create-or-modify-network-profiles
Method 3:
If the issue persists you may try the steps in the link and check.
Wired and wireless network connection problems in Windows
http://windows.microsoft.com/en-US/windows/help/wired-and-wireless-network-connection-problems-in-windows
Method 4:
If the issue still persists you may try to reset Internet Protocol.
How to reset Internet Protocol (TCP/IP)
http://support.microsoft.com/kb/299357
Method 5:
If the issue still persists check if the service is set to automatic or not.
D) Under Preferred networks, click your wireless network, and then click Properties. E) Click the Authentication tab, click to clear the Enable IEEE 802.1X authentication for this network check box, and then click OK two times. Method 2: You may try the steps in the link to create a new network profile. Create or modify network profiles. What is Network Monitor? According to Microsoft’s official definition, Network Monitor is: “A tool used for viewing the contents of network packets that are being sent and received over a live network connection or from a previously captured data file.
a) Click Start and type services.msc in the search box.
b) Search for Computer Browser.
c) Set the service to automatic.
b) Search for Computer Browser.
c) Set the service to automatic.
Steps to set the services to automatic
a. Search for the service (Computer Browser)
b. Right click on the service
c. If the service is stopped then Start the service
d. Select Properties
e. And in the Start-up type select Automatic.
Hope this information is helpful.
a. Search for the service (Computer Browser)
b. Right click on the service
c. If the service is stopped then Start the service
d. Select Properties
e. And in the Start-up type select Automatic.
Hope this information is helpful.
As I documented last week, I've been having intermittent problems with my Internet connection. Just when I thought I'd solved it, I woke up this morning to yet another massive slowdown.
Using the method I described previously—running SpeedTest on at least two devices—I verified that this wasn't a local hardware problem. Something was amiss with either my router, my modem, or my ISP (Comcast).
This kind of thing can be really frustrating, to say nothing of difficult to diagnose. If I call Comcast, they'll run their usual battery of tests, then tell me they can't find anything wrong.
One tool that might help: Net Uptime Monitor. True to its name, this utility helps you track when your connection is up—and, more importantly, when it's down.
![Monitor when network drops free Monitor when network drops free](/uploads/1/2/4/8/124880520/613733688.png)
Specifically, it alerts you to Internet connection failures and records the time and duration of those failures. That log may be of help when presented to your ISP.
It works like this: at predetermined intervals, Net Uptime Monitor (NUM) pings three public servers: Google, Level 3, and OpenDNS. If it's unable to connect to any of them, you'll hear an alert sound, and the software will record the details in a text-file log.
Now, granted, NUM won't necessarily pinpoint the source of your connection problem, and it certainly won't solve it. In my situation, for example, I'm still looking at either a router, modem, or ISP issue. But the log can definitely prove helpful in determining if, say, interruptions occur at the same time every day, or perhaps happen with only one server and not the others. It's all part of the troubleshooting process.
Net Uptime Monitor costs $9.95. You can use the trial version free of charge as many times as you like, but it will shut down after 30-60 minutes.
If you know of any other good tools for diagnosing Internet connection problems, by all means share them in the comments!
Contributing Editor Rick Broida writes about business and consumer technology. Ask for help with your PC hassles at [email protected], or try the treasure trove of helpful folks in the PCWorld Forums. Sign up to have the Hassle-Free PC newsletter e-mailed to you each week.
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