September 2012, I purchased a Dell Inspiron 660s (windows 7 64 bit OS) for my mother and have had issues with 'DNS Server is not responding' since I took it to her home. I power cycled the modem (built in router) and disabled IPv6 with the same issues. Removed all programs associated with AOL (just in case), swapped out the Ethernet cable, reviewed logs (nothing too exciting), and continue to get the errors. Other posts had referenced a miniport being enabled, and cannot locate it on the PC. This is for 'casual' browsing, so no VPN adapter to contend with.. .. Called her ISP (Brighthouse) and they came out and swapped out the cable modem, and a few days later the issues started again. Called the ISP again and they said it sounds as if the network card is going out on the PC. Verified DNS IPs with ISP's support and they are accurate. Called Dell for support (under the one year warranty) and talked to four different people and their 'solution' was to wipe the PC and rebuild it.. .. oh and that will be billable since only the hardware is under support, not the software. Dell told me it was a virus on her PC, then that it was due to the AVS that was loaded on the PC, then it was a firewall, etc etc.. .. .. in the end I was frustrated beyond belief and they could not understand why I didn't want to have them wipe the PC. The 'weird' thing is, I bring the PC to my home (different ISP) and I do not have any issues with the PC.. .. any ideas/suggestions as to what else I can look at? Thank you!
well, it sounds like her service provider is providing sub-par service
If you both have the same service provider, it may be a case where the area is still on copper and they're upgrading to fiber - I suggest you get to the bottom of it with the service provider. Keep notes of when the service is not operating, from day to day. Does a reboot fix the issue?
Also, you might want to re-install windows after deleteing the partition it's on. Just to be sure you're starting from zero, with all the latest drivers for the motherboard, chipset, video, network, etc. It can't hurt, and can only help create a baseline.
Are you sure you didn't put Control Panel > NetWork and Internet > View Network Status and Tasks > Change Adapter Settings. Right Click and Properties of the LAN Card. Double click IPV6 and make sure Obtain... radio button is selected, click okay. Select IPV4 and make sure Obtain... radio button is selected, then click okay.
Click the Orb, type in CMD and will see it at the top of the menu. Right Click CMD in the list and Run As Administrator... Opens a DOS prompt. Type ipconfig /release hit enter... then type ipconfig /flushdns . Unplug the NIC and wait 2 mins, plug it back in. In the DOs Prompt, type IPCONFIG /ALL and tell us what you get?
Do you still get the same problem? Personally the only known major virus that affects DNS is the one noted by the FBI that rerouted DNS servers. Normally it should be passed through by the ISP to the router, unless the computer is compromised..
FYI ALL companies basic model is: The day the computer is shipped is all we guarantee for as working as advertised... So to put it back to that exact way is the 100% fix for everything.