I no longer can access the internet with my hard-wired computer WHEN my router is attached. If I remove the router and reboot, I can get the internet with my hard-wired computer.

Wireless or Hard Wired internet connection ?

When you set up a dial-up Internet service connection on your Windows computer, it comes automatically configured to disconnect itself after a predetermined period of inactivity.

This means that if you walk away from your computer and forget that you're online, your internet connection will automatically shut itself down.

If this feature isn't as helpful as you assumed it would be, you can turn it off using the Network and Sharing Center.

Click "Start."

Click "Control Panel."

Click "Network and Sharing Center."

Click "Change Adapter Settings."

Right-click on your dial-up Internet service icon.

Click "Properties."

Clear the check box next to the "Auto Disconnect" listing on screen.

Click "Apply."

The auto disconnect on your computer Internet service connection is now turned off.

also if its running slow

Slow computers that persistently disconnect from Internet access may have issues with the wireless setup or if on a wired connection, there may be a problem with the Ethernet cable or port.

Troubleshooting connection and speed issues can save money rather than taking the computer to a technician or repair shop.

Additionally, some firewalls and security features can make it difficult to access certain types of websites.

Before spending money to have the computer diagnosed, try running through the most common, basic causes of connection issues.

Consider the type of site you are trying to access.

High-traffic sites such as gaming sites can sometimes be affected by high volumes of users accessing or attempting to access the site at once.

Test this by attempting to access the site at different times during the day and evening; peak hours for games that typically appeal to children may be during the afternoons on weekdays while games for older or more mature audiences will see high traffic at night.

Check your Internet connectivity and determine whether you are using a wired or wireless connection.

In the lower right side of the computer screen there should be an icon displaying the Internet or network connection.

Wireless connections are displayed with connection bars similar to those seen on cell phones while wired connections may show the end of a plug next to a monitor icon.

Reset the router if using a wireless connection.

For most home routers you simply unplug the power cord from the router box, wait a moment and plug it back in.

You may have to restart your computer to reestablish a secure connection.

Access the router through the computer and check for updates. Some routers offer firmware updates that fix some connectivity issues.

While updating the router, check for Internet browser updates as well as any critical updates for your computer's operating system.

Verify the computer uses the most up-to-date version of the Web browser available.

Try a different browser. Internet Explorer is the most commonly used Web browser, but not always the best for every site.

Try downloading another Web browser such as Firefox, Opera, or Google Chrome and test the sites there.

If the connections are still disconnected and the Internet speed seems slow, it may be an Internet issue.

Wired Connections

Trace the Ethernet cable from the Internet modem to the computer if using a wired connection.

Unplug the end of the Ethernet cable and check that the plastic head is secure and that there is a click when you return the plug to the modem; do the same on the computer end.

Inspect the Ethernet cable carefully as it runs from the modem to the computer.

If the cable was tacked down with a staple gun or other attachment, check the cable to verify it wasn't accidentally pierced.

Additionally, check for bends, twists or worn areas along the cable.

Measure the length of the Ethernet cable.

In general, cables longer than 100 feet tend to receive poorer signal transmission.

If the cable is longer than 100 feet, replacing with a higher quality cable or moving the computer or Internet modem may resolve connection issues.

Hope this helps.

Try on D-Link - TechSupport FAQ

You can try to change the browser settings.

1. If you're using Internet Explorer, click on the Tools tab
2. Click Internet Options
3. Click on the Security Tab, then under security level for this zone , set it to medium or low. Hit apply
4. Click on Custom Level , scroll all the way down and on User Authentication, set it to prompt for username and password. Click OK.

First thing to try is rebooting devices in this order, 1.Modem, 2.Router and 3.Computer.

If the above did not fix your issue then keep reading.

Plug you computer directly into your router via an ethernet cord and try accessing internet again. If this fixed it, then you have some wireless settings misconfigured. A "hard reset" can possibly fix this by restoring all settings to default. There is a little pin sized hole on the back of your router, inside of it is a button. Stick something like the end of a paper clip into it and press for 5 seconds while the router is plugged in.

If it is still not working then plug your computer directly into your modem via an ethernet cable and reboot the modem then your computer (in that order). Once everything is back up and running, try the internet again. If this fixed it, your router is the culprit and is either misconfigured or malfunctioning. Perform a hard reset as described above to put all settings back to default on your router and try the internet again.

If you still do not have internet access then you either have a computer problem or your internet has a problem or has been shut off.

To rule out the possibility of a computer problem, try your computer at a friends house or work to see if it can access the internet there. If there is an unsecured wireless router that you can pick up from home, try using it just to see if you can get internet access.

If the computer does work when connected to someone elses router, then you need to call your ISP (Internet Service Provider) to see if there is a problem with your account and have them fix it.

Remember that every time you connect a different piece of hardware (router, computer) directly to your modem, you have to reboot your modem so it leases an IP to that specific piece of hardware.

You said that the router connected to the modem is acting like an access point. that means the DHCP server on that router must be disabled. The second router is connected to the first with the ethernet port. What you can do, you can enable the DHCP server on the first router and make the second router work as an access point.
so that both the computers will be in the same IP address range.
If they are already in the same IP address range then you can try to ping the second computer's IP address form the first computer.
Click here for more info.

Same router I use. It sounds like you have an option in your router that is blocking you from accessing the internet. Possibly a bad DNS server or you have accidentally restricted your computer from accessing the internet via filters.

What I would do at this point is go through router, option by option and write down any custom settings you might have. After you have them all recorded, hard reset the router. This can be done by pressing the pin hole button on back of router for about 10 or so seconds. Doing this restores your router to factory specs.

After back to factory specs, try connecting to the internet before implementing any type of security. If it works then one by one enter in your old settings that you have written down from the above step. After each setting change, try connecting to the internet, when you get back to not being able to connect, you found your rouge setting.

More thoughts on this issue:
Try connecting directly to your modem via a wired connection. After you wire the connection, reboot your modem and try accessing the internet. If it doesn't work, then I would call your ISP to see if there is anything wrong with your internet (unpaid bill, area outage). If it does work, then rehook your modem to your router. You will need to first reboot your modem then router after modem syncs up.

The rebooting of devices is important. When your modem boots up, it leases an IP to the MAC Address of the connected device. If you have not "cloned" the MAC addy, then each device has a different MAC addy. The modem will not allow access to the internet if the device connected has a different MAC address than what it leased the IP to. I would actually try this method before a hard reset of router.

If your modem has battery backup, you will need to unplug the battery along with pulling the power wire to perform a reboot. The router can be rebooted just by pulling the power wire and plugging it back in.

Hope this helps, sorry for it not being in order, the reboots came to mind after I started writing.

Remove the power cord from the router. Wait 30 seconds. Reconnect the cord. Like rebooting a balky computer.

You may also have other routers nearby on the same broadcast channel.

Occasionally cordless 2.4ghz phones may jam the wireless channels.

Chose another channel from the router setup.

If you are having difficulties accessing the Internet, you need to do MAC Cloning.

Disconnect your computer from the modem first and plug it to port 1 on the back of the router. Access the router's admin page by typing http://192.168.1.1 on your Internet Explorer. When you get to the router's setup page, look for the MAC Cloning option. Click on Clone MAC Address button. Do this from the computer which the modem was directly connected the last time. This will place the MAC address of your computer into the router. Save settings then turn off the router.

Now connect your modem to the WAN/Internet port of the router. You connection should be: PC to port 1, Modem to WAN/Internet port. Reboot the router and reboot your cable modem as well.

You should be able to go online after that.

• The default user name is: Admin
• The default password: is password or (for older routers) 1234

Try the default username and password before resetting the router to the factory defaults.
When a router resets, it goes back to the state when it was new — all information that was entered by hand is lost! Examples are critical things you need to get online, such as ISP username, ISP password, IP addresses, security keys, and ports and services that were opened. It all needs to be re-entered.
So, have your ISP information before resetting the router.
Naturally, if you moved to a new city, or if you bought a used router, the old information in the router may not be of use to you. Contact your ISP if you can't connect any computer directly to the Internet. Then, if there is a connection problem when the router is added, see No Internet Access Through the Router
Reset for most routers with a reset button on the rear panel
Write down configuration information such as IP addresses, security keys, opened ports and services, etc., that you modified. (The default username is admin and the password is either password or 1234. Try these before resetting the router.)

1. Press the reset button on the back until the test light blinks. This takes about 10 seconds. (To avoid accidental resets, the small button is recessed. Use a pen or paperclip to access it.)
2. Release the button.
3. Wait for the router to reboot.
4. Log in with the default password. If the router was not cleared, try these additional steps AFTER the router has finished rebooting.
   
5. Unplug the router's power.
6. Press and hold the reset button. While the button is held down, reconnect router's power.
7. Continue to hold the reset button for 20 seconds after reconnecting the power.
8. Wait for the router to reboot.
9. Log in with the default password.

ISP's have different requirements for connecting a router to their hardware. One required me to enter a static IP address, another requires acceptance of a dymanic IP address and a third uses dynamic IP addresses and requires a PPPoE logon from the router and a configuration change to their modem to switch it to a bridge, and a fourth I have read about require a reboot of their modem device to recognise changes in the MAC address (assigned to the network adapter) of the attached device (router). I am sure these are not all the variations possible, Requirements for router connections specifically the WAN side of the router are specific to your ISP. Often in their help or support areas they either have FAQ's or help pages to explain the requirements or an online technician available through chat who can tell you what is required. Often however it is up to you to be able to perform then necessary configuration tasks (especially on you hardware) to make this happen. I may be able to provide assistance of you identify you internet provider including local provider companies and geographic location (city / State) in some cases to determine their policies and requirements for attaching routers to their equipment.

Once you determine this connect the router and get a wired connection to work assuming the router has ethernet ports.

Then test an unencrypted wireless connection

When that works consider the following:

or general wireless security see

http://www.fixya.com/support/t281214-wir...