Surfing Problem after 25 minutes

Hello,

Dear All my name is Aman I am getting surfing problem iafter ever 15 or 20 mintutes after reboot the connaction or disconnact the pppoe dilar if i restart or reconnact it's working and after 15 to 20 mint again i got same problem i search it taskbar and in hijack repot but nothing new in that so guys can u gtell me it's some problem in registry and ya i got problem in every browser and i try by dns flush and winshock through also but no result so plz help me

Thank You,

Aman Shaikh.