“go to control panel>>windows firewall>>advanced>>restore defaults 100% works”

It seems to have worked for me – I lost my desktop and my task manager a few minutes after booting up but thankfully my browser kept working and I found this great tip – thanks!

If you have xp (perhaps other OS’s have this too) there is a tool that you can use to reset the TCP/IP settings to their original settings. you can also reset the winsock files too…

You just have to go into the command prompt and use the netsh command, and all was happy and good for me, and now all is working well….

if you want more info, you can get in touch with me, or check out the following link to microsoft…..

to reset tcp/ip go to http://support.microsoft.com/default…b;en-us;299357

to reset winsock2 files go to
http://support.microsoft.com/kb/811259/\

or there is one more thing that cud be tried…

I still remember once when i had a problem in 2008.My problem was actually with the DNS. It problem involved able to detect the LAN and internet but cannot browse internet.

i changed my DNS server addresses, instead of detect automatically, to put the same address of the ADSL settings (prior to access of ADSL the part where you had to set it up).For me that was preferred address 203.50.2.71 alternate address 139.130.4.4

go to command prompt and ping 216.115.108.245
and then ping yahoo.com

for me i could ping yahoo.com but could not ping 216.115.108.245 (which is yahoo)

if you could ping both i think its even better, though not sure.

reboot then all was good on the internet.

Every installed software also could not access to Internet, such as antivirus online update, windows live messenger, etc. However, the PING command works on Command Prompt!

At first, I suspected one or more related windows services were turned off, but they looked fine after checking.

No clue. I searched Internet for the solution (using my Mac). After reading some forum posts by others, I suspected the problem was caused by corrupted Winsock2, which is used by windows network software to access network services.

Finally, I found the tutorial to repair Winsock2 corruption at Microsoft Support. If you are using Windows XP Service Pack 2, it only takes a command to report Winsock2:

type netsh winsock reset at the command prompt

After that, restart your computer and Winsock2 shall be fixed. It works for my friend’s laptop and he looked at me amazingly.

For Windows XP without SP2, it takes more steps to repair Winsock2. You can get the step-by-step instruction on the Microsoft Support.

http://support.microsoft.com/kb/811259/