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August 31st, 2012 12:00

Network adapter not working + one other issue(?)

Hello,

I got a dell xps 8300 desktop which I bought a year ago.

Last week, I noticed that my network adapter wasn't working anymore, I couldn't access internet anymore. I thought it was broken, so I bought a new one. Now the new network adapter isn't working either. I succesfully reinstalled the driver (got it from the internet with my other laptop), but no effect. My router does recognise my computer on the network, but I cannot access the router IP address from my PC. If I look at the LAN socket, I see a steady glowing orange light. I tried to plug the cat 5 cable in my laptop and my laptop is able to connect to the internet. I placed the network adaptor in a different PCI port but no result. My soundcard works fine in both PCI ports. While I was doing this, I noticed a steady glowing orange light on the motherboard! I tried to read the text which was next to the light and it said "AUX_PWR".

What does the light on the motherboard mean, and can it have a relation with my network adapter? All other hardware works fine, I can use my computer but without the internet.

Can someone help me please? Any options I can try? Thanks in advance!

Tim

11 Posts

September 1st, 2012 06:00

Alright, problem solved.

It appears some McAfee customers might experience connectivity loss with an update from 20-8-12:

www.techsupportforum.com/.../customers-may-experience-loss-of-network-connectivity-and-or-errors-in-mcafee-20-8-12-a-661654.html

Reinstalled the software, and the internet connection came back.

10 Elder

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44K Posts

August 31st, 2012 12:00

You could try a System Restore to last date available before  the problem started. Personal files will be ok, but you will have to reinstall any (Microsoft etc) updates originally installed after the date used for the Restore. Always good to back up first. :emotion-5:

Light on motherboard just means there's a small amount of power to the board. That's normal operation.

From the manual about the on-board NIC:

Amber (left) — A good connection exists between a 1000-Mbps network and the computer.

Did you try rebooting the router? Power it off, wait a few min and then power it on. See if 8300 can connect now.

In Internet Explorer, click Tool>Diagnose Connection Problems. See if what it reports and/or if it can fix the problem.

Scanned thoroughly for malware lately?

10 Elder

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44K Posts

August 31st, 2012 13:00

Can't say it's not hardware quite yet, but software seems more likely.

System Restore would be quickest/easiest way to undo whatever may have happened to your settings, and without affecting your personal files.  And scan for malware too.

BTW: Are you sure DNS settings are correct in Windows on the XPS 8300? Open the Network Connections control panel in Windows and work your way through to TCP/IP settings where you should see settings for DNS servers. Compare those DNS settings to how your other PCs (which can assess the internet) are set...

11 Posts

August 31st, 2012 13:00

I tried to reboot the router several times, but that didn't work. I did the Diagnose Connection Problems also, it said it was unable to connect with a DNS server, but there where no options to fix something.

I'll try to make a system restore later this weekend, but I wish to try other options first.

So it's not really a hardware malfunction?

11 Posts

September 1st, 2012 04:00

Ok, I tried System Restore, but apparently I never made a restore point before so I can't run it.

I did a scan with McAfee but 0 problems. I booted windows in safe mode with network opportunities, and I was able to reach my router and the internet! The TCP/IP settings are set on automatically on both computers.

10 Elder

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44K Posts

September 1st, 2012 20:00

Glad you got it fixed.

I dumped McAfee ~2 years ago and went to free Microsoft Security Essentials. NO regrets!

But why don't you have any restore points? Make sure System Restore is turned on. And grab a free copy of Malwarebytes Antimalware. After installing Malwarebytes, launch it and click Update tab and check for updates. Then run it without changing any settings. Sometimes malware turns off System Restore so we want to make sure the system is clean. And yes, McAfee will miss things, so it's good to run Malwarebytes regularly too.

 

 

4 Operator

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4.4K Posts

May 30th, 2013 03:00

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