I have a custom built pc with I5 intel processor window 7 Ultimite turn off 1 week ago and came back and turn on all i get is the green light nothing runs any answers thanks fandwbai

Sounds like a hardware issue, pc card, cpu, or memory is not seated right.:P Advice offered, If you need more help it is advised to seek the council and advice of paid professionals. The answer is always 42, or reboot.