Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have a Windows 7 PC and two mac computers. When using mac comptures, I don't have problems with the wireless home network. When using Windows 7 PC, I cannot get internet access using google chrome until my computer has been on (and logged) in about ten minutes. Chrome says that DNS lookup failed. I have also F-Secure installed on my computer. How can I detect in Windows 7 what is causing this problem?

share|improve this question
up vote 0 down vote accepted

I found a reason for this! My router (Cisco EPC3825) has setting in Security tab: block ip flood detection. When I unchecked this option, everything works fine!

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.