My workstation is a Dell T3600. The 3 & 4 are amber and the power button is white. Dell's web-site says this is ACPI S3 mode (power saving). But it won't wake up for anything. Everything was fine yesterday. I finished work and left it on like normal. The screen save turns off after 30 minutes idle. Windows 10 is configured to not go to sleep or suspend. Usually just hitting the space bar on the keyboard brings everything back to life. I've disconnected everything, pulled the ram and reseated it. Nothing. As soon as the power is plugged in I can hear the fans and the front displays the same stuff ( 3&4 on, white power button). After a about 30 seconds I see the hard drive indicator flicker and then nothing. Nothing is displayed on the screen. No combination of keys does anything.
And suggestions?