it sounds like its a motherboard problem.
Your power button has a light on it - blinking amber means there a problem with the pc or attached/installed device, solid amber means its a power supply issue
what are the 1234 light doing? They should flash on & off while booting up.
1 green = no ram detected
2 - expansion card issue (could be gpu)
3 - possible cpu failure
4 - computer is in recovery mode.
1&3 - memory config error or conflict
23 - drive failure
234 - usb or usb device failure
24 - graphics failure
34 - memory problems again