I'm having some trouble with my computer. I run Windows 7 Home premium 64-Bit and as of this morning I've had trouble with connecting to the internet. My computer is a desktop which is always connected to a ethernet cable and never uses wireless. I do take it to my friends house sometimes but after today it seemed to have just stopped connecting. I've tried different cables. The other computer in my house. (The one I'm using to write this.) Is connected to the internet on the same router. I've looked everywhere but all I could find were problems with Wireless networks. I get a red X over the internet Icon on the bottem right and hovering over it I get "No connection - No available connections." Even though I'm using the same cable and router I have been for the past few months.

Hello, If you get a red X that indicative of a hardware/cable problem. Change the cable and if need be, change the cable to another port on the router. Also, go to your friends house and see if you can connect to his/her router. If it does not work, you may have a faulty NIC. If it works at your friends house, the switch ports on your router may have hardware damage/damaged connectors. Miguel Fra / Falcon IT Services Computer & Network Support, Miami, FL Visit our Knowledgebase and Support Sharepoint Site

I've tried different cables. I've tried it at their house. Tried different ports and such and it doesn't seem to work. I've tried going through using other fixes and still nothing. Tried restoring to a previous point and still haven't gotten anything.

Time to check the NIC Click Start=>type devmgmt.msc in the search box and select device manager from the results Expand the network adapter category and right-click on the device and select properties Does then status indicate it is working? Note the device information and driver version. Close out. Right-click it again and select uninstall. Then right-click on Computer at the top and select scan for hardware changes. Let it re-install the NIC. Run a full anti-malware scan. If clean then... Temporarily disable the firewall or the security software to determine if it is blocking the network connection or reboot and tap F8 and choose safe mode with networking.

You might want to use this ping tool to troubleshoot your network problem, think can give you more ideas. Hope this helps.

Okay. So I've just tried everything above. For the network adapter it says it's working. So then I try to uninstall and reinstall. When I click search for hardware change it scans and then doesn't do anything and goes away. But after I restart my computer it's there again. I also don't have a malware scanner due to I need to resubscribe. For the pinging tools I could connect to the Ip's but when I put nslookup I get Unknown and random letters and numbers.

Perhaps the old security software is the issue. Uninstall it and reboot the computer. Go to Start\Control Panel\System and Security\Windows Firewall and select use recommended settings for the firewall. When you get a connection to the internet: You can get Microsoft Security Essentials for free. It is very effective, does not slow down the computer and did I mention, it's free. You need active security software. http://www.microsoft.com/en-us/security_essentials/default.aspx

I'm still getting no connection to the internet what so ever. When I go into the networks window on my computer what normally should be a diagram showing my connection is just a blank area say "The depency service or group failed to start."

Hi, Try to use SFC command to scan your system file: How to use the System File Checker tool to troubleshoot missing or corrupted system files on Windows Vista or on Windows 7 Also, reset the TCP\IP to check how it works: How to reset Internet Protocol (TCP/IP) Alex ZhaoPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

The main reason behind this issue is the problem with the Ethernet card installed in your system. Any fault with the Ethernet card will prevent you from getting connected to the Internet. Sometimes, the problem may also exist if the Ethernet card is not installed or if its drivers are not properly updated. Hence, you need to troubleshoot it to fix the problem. In order to fix the issue, you need to troubleshoot and update the Ethernet card. For that, initially you need to click on the ‘Control panel’ option from the ‘Start’ menu. In the corresponding window, you need to click on the ‘Hardware’ tab and then click on the ‘Device Manager’ section. This will end up in displaying a list of devices, in which you need to click the ‘Network adapter’ option, which will show you the Ethernet card. You just need to double-click on the card to get the options to troubleshoot or to update the drivers. For more help visit here: http://router.iyogi.com/home-network/cannot-connect-ethernet.html http://support.microsoft.com/kb/306947 Email Spam Blocker

Sorry for no updated status. But none of this is working. I've tried everything suggested and still nothing. Could it be a problem with the motherboard itself? I use the ethernet ports in the back of my motherboard, not a seperate PCI card with a ethernet adapter.

If you open Control Panel and check Network and Sharing Center>Change Adapter settings - does the ethernet adapter show as 'Cable unplugged' ? If so, I'm having simialr issues and am wondering if this is now an infection of some sort. I've been unable to resolve it using information from a number of forums. At least you should be able to install a PCI adapter to resolve the problem. I had to use a USB adapter to restore internet access. I'll post again if I find a solution. Regards, JimJ Chambers

If you get a red X that indicative of a hardware/cable problem. Change the cable and if need be, change the cable to another port on the router. Miguel Fra / Falcon IT Services Computer & Network Support, Miami, FL Visit our Knowledgebase and Support Sharepoint Site