Three days ago, my laptop was working very well and it was connected to the internet using a cable while since yesterday it refuses to connect to internet at all!
I was using the cable as I used to. However, when I troubleshoot the connection, it says, Your computer is trying to connect a DNS server that is incorrect or does not exist!
The internet cable itself is working properly and I have tried it on other PCs. I also tried to use a wireless connection or even a USB! however, it did not work at all ! and it kept giving the same message!
When I try the CMD and PINGing my IP address, it works properly, however, my default gateway's output is ''request timed out''..
I set both the DNS, IP address and almost everything else to ''automatically obtain ...''
I tried to boot from a USB flash drive which had linux-ubuntu installed on it.. It worked properly !!
Also, when I disable my Realtek PCIe FE Family Controller, then enable it.. the connection is established properly. However, it lasts only for two seconds!!
I do not know where the problem is, I tried to 'backup and restore to factory settings'. However, it kept giving the same error!
My laptop is: DELL inspiron N5110
MY Operating System is : Windows 7
intel core i3
Realtek PCIe FE Family Controller
Any help would be appreciated because I have been not able to access the internet for whole two days and I still do not know where the problem is!
Thank you so much!
This could be because of a security update; the DNS (Domain Name System) settings may be corrupted. As the system was able to connect to the internet 3 days ago, you can try to run a ‘System restore’ to a known good date when the internet was last working. Please use the link below, which explains how to perform a system restore in Windows 7.
In case you have McAfee anti-virus program installed in the system please try the below mentioned steps.
• Please turn of the Computer.
• Restart the system and press F8 during the Dell logo.
• From the advanced boot menu please select “Safe mode with networking”
• Please click on the below mentioned link and follow the instructions that is listed for Windows 7.
I hope this helps. Please do write back in case you need any further assistance on the same.
Thanks & Regards
Thanks and regards,