i have an acer 5520g(LA-3581p) notebook. this pc after turn on pc, constantly opening and closing. like trying to see the rams. i checked all of S1 voltages and all done also ddr-a/b-clk have 0.65v. bios updated from original site and tryed few cpu but doesnt any change. so, what can i do now? can you give me some idea? I forgot to write. the computer draws 0.70 amps