no internet access

i have a problem with internet access.i made a format on my laptop and i put the windows 7 ultimate 64 bits.i was ok the first day with internet.the next day i had the problem with internet access.the yellow triangle and ununidentified network.in a week i made 3 times format of the laptop and i have the same problem again.and i dont know y it let me to have internet access the first day.i didnt install any program.i have another laptop and its ok with the internet access.i also try another router but nothing.pls help me.......

When you say formatted, did you wipe the hard drive and then restored Windows 7 from the recovery drive? or just a complete restore without the drivers for your hardware? Sounds to me maybe your network card driver may not have been installed correctly.

Could you post a screen shot of the problem? (the yellow beside the icon)

Try to unplug ya router/modem from power and reconnect see if that helps.

If you have iTunes installed, Bonjour may have installed another connection. If this is the case, uninstall Bonjour.

i install from a new windows cd.i made updates of the drivers with driver genius.i think its not a problem with a driver coz the driver genius unistall the old driver and install the new one.the strange is why it let me to access the internet the first day?????and the three times it made this crap.
i unplug,reset,switched off the router but nothing.but as i said before i tried many router wired and wireless but nothing...

Try running this batch file which will reset winsock, reset the TCP/IP stack and release renew your IP.

Download Renew IP + Reset Winsock Batch File

If you are still having problems please post a screen shot of your ipconfig /all like in the picture below.

now i made again format and install of windows(windows 7 extreme R1) and i have internet access.i will wait until tomorrow to see if i will have the problem with the internet access and probably i will.
then i will try your solution chev65 and i will tell you the result

parperis said:

now i made again format and install of windows(windows 7 extreme R1) and i have internet access.i will wait until tomorrow to see if i will have the problem with the internet access and probably i will.
then i will try your solution chev65 and i will tell you the result

Ok parperis, I hope it works this time but if it doesn't just follow instructions and we can go from there. :)

until now i have internet access.if something goes wrong again i will inform u....ty for the help