laptop not connecting to wireless

I have an older laptop its an hp pavilion ze2000 running windows xp did a complete restore on it and was trying to connect to my wireless router , I use to just click on the connection enter the password and it connected now I have no idea how to do it it keeps saying certificate of cant be found . can someone tell me how to do it please

 

Hi my fellow , you have to follow this

http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&cc=us&docname=c00033108&dlc=en&product=1842189

informing us about your model , is there any ? in device manager menu ? Take a look at this solution

http://www.fixya.com/support/t1289793-wireless_not_work_hp_pavillion_ze_2000 :wave

 

there no ? in device manager model is hp pavilion ze2000 pv336av#aba the other link didn't help or I just couldn't find it

 

Are your date and time set correctly?

 

yes date and time are correct