can't access wifi on hp 650 notebook pc

ENG:

my laptop product name is hp 650 notebook pc (32 bit windows 7). I formated my laptop two  days  ago. now i cant access wi fi. i dont have driver cd for wifi. i have visited the  website of HP and select my model,and download the all wifi support driver for my model.
 but still problem exists. please help me.what is the exact model name of wifi driver ?

Atheros Wireless Driver version 10.0.0.251 <- this doasn't work either

LAT:

Man ir portat'ivais dators hp650 (32 bit windows 7). Pirms divām dienām to pārinstalēju. Tagad es nevaru piestartēt wifi draiveri. Diska man nav. No HP mājaslapas lejuplādēju visus draiverus, diemžēl wifi neizdodas uzinstalēt. Lūdzu palīdziet atrast īsto draiveri.