Hello everyone, I have a HP DV4 1275MX laptop computer that won't boot up. All of the lights light up but the screen stays black. I have googled this computer and this laptop model has had many issue with overheating and many people have had the same problem with the screen staying black. I have tried removing the battery, plugging in the cord for 2 minutes then unplugging it, hold the power button for 45 seconds and then put the battery back on but that did not work. I was wondering if anyone here could offer up some assistance. I'm hesitant to open the laptop up as Im not really good with laptops. Anyways thanks in advance for your help...this site has been so helpful to me in the past s I'm keeping my fingers crossed!!!