member main apny laptop ka kebord ke 2 battn theak karny ke leye us ko kholla tha us waqat mujje nai pata tha ke kebord ke bottan opaar se hi open ho jaty hain mainne us ke ram or hard or modem or prossesor ko bi nikal lia tha ab jab main system on karta hoon too blank screen aati hai like a sfeed roshni ati hai sirf screen pe plz help me thnx