Won't boot
there's several issues that may be causing this issue, here's the main ones:1: faulty RAM: RAM that is faulty can cause blue screens of death, may not get read from by the system or cuse the system not to boot up at all, remove any RAM, and replace them or if you have two, remove one and attempt a boot, if this fails:2: Motherboard: If this fails, then it's a case of either a trip to the nearest computer shop or the internet, the old board will be simply completely dead, but if this fails... then3:Processor: Now's your chance to upgrade your processor!!, if you wanted something faster, but didn't know what one you want, Google your chipset's list of compatible processors, and look for one with the same socket as the current one, on the top of the socket, next ti the locking screw, there should be a little nit of text, it should say something like mPGA 478P (or another socket like G3 or others, the P is important, this is the form of the socket, with most, there's two form factors, usually P or B)If this results in still nothing, test the charger and battery, this should resolve any issues rather quickly!