So my problem started when my monitor just black when starting my cpu the keyboard and mouse that time have still power.. i followed a instruvtion to remove cmos to fix the monitor but it didnt work... so i remove the cord like from my psu that is connected to motherboard and also the ram and place it back again.. after this the keyboard and mouse is not starting just like the monitor.. the keyboard only gets light for a few seconds.. i tried booting with only one ram but nothing works.. my fans spins i hear beeps and normal sound but still nothing.. i have no technical background so i hope you can help me.