Wifi telling me passphrase is incorrect after reinstalling windows 7.

[samesame9]

Hi i reinstalled windows 7 today and when trying to connect to my wifi it tells me the passphrase is incorrect. I am able to connect to other networks on the PC and both my laptop and my phone can comnect to the wifi using the same passphrase. I have tried rebooting both my router and laptop, reinstalling the network card drivers and it still doesnt work. Help will be much appreciated. Thanks

 

[ICIT2LOL]

Hello and welcome samesame9 mate when you clean installed how did you set the dive up did you just format it or wipe it as I always clean or clean all in DISKPART so that I am sure that there are no remnants of the old install left behind . Clean takes less time to do than clean all but in any case do this first up to check for any file corruption and by the way how did you do the re install ie what form of media did you use??
http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html
http://www.sevenforums.com/tutorials/433-disk-check.html < if necessary include the /f and /r in the command line as per Option2
Run these in safe mode and the sfc often best run for two to three runs