Try to start from a dust to clean. Then BIOS reset (there is a jumper on the motherboard, or the battery to get it). The speaker not beeping? If it beeps — to signal can I see the code of the fault. Well, then see if there are any traces of "fires".
elvera.Little answered on October 8th 19 at 03:22
still as a variant to disconnect everything from the mother(hard drive, any expansion cards, to "play" with memory) to run. If start, to connect disconnected one by one and test to run.
lorna_Marquardt answered on October 8th 19 at 03:24
If you do not start the fans, or the PSU or motherboard, and probably the first.