first, check if there's a virus pare, malamang conficker down/up yn, ganyan kasi epektu nun eh,2nd, ask for support sa PLDT na mismo, maybe its their modem problem, by the way ano ba ilan ba bandwidth mo? DSL ka ba?
running W7 kaya malabo conflicker, modem is working fine along with the router, area namin ata problema kasi sabi ng pinsan ko lag din sa kanila