Question about Dell Sprint Wireless 5720 Built-in Mobile Broadband PCI Express Mini-Card for Sel...

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Error 678 I have Dell Mobile Broadband internet through sprint. It no longer lets me connect to the internet. It says Dell Mobile Broadband Card Utility: Error Connecting. Error 678: The remote computer did not respond. For further assistance, click help. I clicked help, and I couldn't figure anything out. The help section isn't very useful without being on the internet. The problem seemed like it happened slowly. For a few days, my internet had awful service. It has bars of service like a cell phone, and it showed no bars most of the time. I usually have about two. A couple more days of bad service, but then it started giving me the error 678 message. I would continue trying to connect to the internet, and it would eventually work, though my service was still awful. In the last two days, my service has been back to normal. I have about two bars of service without being connected to the internet, but whenever I try to connect, I get the error 678 message and I can no longer connect to the internet despite trying many times. I've tried restoring my computer to a few days ago, but I haven't restored back to a point that I remember my internet working, because that was several days ago and I didn't know if that was safe. I've also tried taking my computer to different places in my house to see if the problem had anything to do with bad service at my computer desk, but that didn't fix the problem. I haven't tried taking the computer outside of my house since it stopped working.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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Douglessd
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SOURCE: my D600 shows that it has been connected to WIFI

Maybe something else broke when your computer overheated :(
Did you find a cause for the overheat like blocked vents or something?

Try and connect an ethernet cable directly between your wireless access point and your computer.
If that works then the problem is definitely with your WIFI.
If it doesn't work then the problem could be with your access point.

Also have a look in the event logs and see if there are any error messages.

You might also be able to find some diagnostic software for the wifi card.
Have a look at the manufactures web site.

Hope this helps.

Posted on Jul 08, 2009

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  • 713 Answers

SOURCE: I am not able to connect to a broadband connection

make sure ethernet card is in slot tight screw down go to computer ,system propertys, go to device manager, trouble shoot it.

Posted on Feb 17, 2011

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SOURCE: After installing a furnished new

Hello.

I'd suggest to update your computer's NIC (Network Interface Card) driver software.

Your particular operating system would determine how to find, but go to Device Manager, find your network card, Right-click and select Update Driver.

If still a problem, contact your provider to be certain that the latest firmware is installed on your modem.

Hope this resolves your problem.

Posted on Apr 09, 2011

cjblackheart
  • 135 Answers

SOURCE: Unable to boot Windows Vista

Well if your problem is to back up your files, you already said that you can get into safe mode, you can attach an external hard drive or flash drive to copy your files from local drive. Remember to activate your OS system restore if your able to succesfully restore your system with your CD. You can change that settings on properties of "my computer".

Posted on Jun 18, 2011

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SOURCE: Hey guys, I have a interesting question for you...

what are facing is a problem caused by a virus that either destroys files that support .exe applications to run or it replaces which makes your machine unstable. my first solution to you is to repair your operating system using the operating system cd. secondly, if that doesn't work please try installing a second os on your system and then you do a dual booting. u then delete the folder of the previous os. if that does not work u backup ur files and then you format ur system with a new os

Posted on Jul 28, 2011

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