hi. i have a compaq presario c300 to repair ,power led rapidly flashes when the laptop is powered on ,theirs no screen ,hd spins ,cpu fan kicks in then stops ,dvd drive lights up
this is what i have done so far ,tried external monitor - nothing ,removed ram and replaced with known good ram - nothing ,removed hd - nothing ,checked psu reads 19v ,battery is charging , dc jack ok to
so its down to the motherboard ,i have done my research and its led me to believe its the power regulator , now am very good with pc`s and repair computers daily in normal circumstances i would replace the motherboard but its costly on this laptop ,so i would like to find out exactly whats gone and replace the component ,but i dont know how to check which component and dont know which component is the power regulator ,can someone show me a pic of one and tell me how to test it with a multimeter... i know its a big ask but i have allways wanted to repair motherboards at component level.. cheers