My 9ish yr old HP 200-5000 all-in-one computer was on and running fine yesterday. Today I go on to look something up and it was off. I thought that’s weird but, maybe it accidentally was turned off. So I went to turn it on and nothing. I checked the power cord, I checked the outlet, I tried to unplug it, hold the power button in 10-20 seconds and then plug it back in (I did this every different way too) and I took the back off the computer to see if the motherboard would light up with the power cord plugged in to the computer and a different outlet and nothing. No sounds, no lights, just dead. Any ideas? I even went through the HP trouble shooting guide and still absolutely nothing. Thank you for any information.