intermittent blockage of internet access

Question

Hi there,I am having a problem since a few weeks I don&#x27;t understand.My computer is:IMac 27 inch medio 2011Processor 2,7 Ghz Intel CoreRAM 4GBOs X 10.7.5My access to internet seems to fluctuate intermittently every one or two minutes or so. One moment I fluently surf through the internet and the other moment it blocks without any further download of any information. After a minute or two it continues again with a normal speed.This happens exactly the same with WIFI and Ethernet, it happens with every website. The funny thing is when I use my Mac as a PC by Bootcamp Internet runs without any problem.I get the following error: DNS_PROBE_FINISHED_NXDOMAINI have used the repair disk function and repair of disk permissionsI reinstalled the browser without result.Are there any other things I can do except to reinstall the whole thing again?greetingsGuy

Baby-Boomer-USofA · Answer

Try the basics first:  Change your router channel number.  Most times this works &amp; is all you have to do.Disconnect &amp; reconnect your modem.  unplug it for about 10 seconds.  Plug it back in.  Do the same for Apple’s routers.  Wait for everything to reboot.System Preferences&gt;NetworkClick the Assist Me button.In the next window that pops up, click the Diagnostic button &amp; do the necessary.Research Knowledge Base for network problems that pertain to the OS that is currently installed on your computer.  See these basic networking KB Articles:  http://support.apple.com/kb/HT1401AirPort troubleshooting guidehttp://support.apple.com/kb/HT4628Wi-Fi: How to troubleshoot Wi-Fi connectivityhttp://support.apple.com/kb/HT2712Using network locations in Mac OS XManually provided DNS server addresses are higher priority than DHCP&#x27;shttp://support.apple.com/kb/HT1714Solutions for connecting to the Internet, setting up a small network, and troubleshooting&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;What to do when you can&#x27;t connect to the InternetAlso, run the Airport Utility app which is located inside the Utilities folder.&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;&#x3D;If using a  Linksys router, contact LinkSys Customer Support and/or post in their forums.If using Apple&#x27;s Airport, please re-post over in one of the AirPort Forums.

Linc Davis · Answer

Non-responsive DNS server or invalid DNS configuration can cause long delay before webpages load - Apple Support