I'm looking for some advice or someone to have a look if you are close to 2223. The PC doesn't turn on i.e. the power button does nothing. Fans do not spin, to me it looks like it doesn't register the button press. Because it doesn't turn on I'm having diagnosing the problem. Most of my PC building is from the Thunderbird and A64 days. Does anyone that is more up to date have some advice? The PC is this one I picked up from the forums https://forums.overclockers.com.au/...700-z170i-sf450-16gb-ram-noctua-fans.1316775/ When I first got the PC I had to add a graphics card since the motherboard wasn't outputting a signal (maybe bios?) and had to re-seat the ram as the ram warning light came on after I put the graphics card in. Resetting the bios allowed it to boot and then all seemed OK. For a week everything was up and working, kids were playing Minecraft / Roblox, etc. I had also removed the SATA drive as it wasn't needed. What I can say: - The board has power (idle power light is on) - The GPU has power (light is on). - Shorting the power switch pins on the motherboard doesn't turn the PC on. Its the same as pressing the button i.e. nothing happens. I'm starting to question if I remember how to do this, but its just touching the 2 pins with a screw driver. I've tried - No graphics card, 2 different graphics card (GTX 760 and R7 240). - No ram, 1 stick. - a different SF450 PSU. - re-plugging every cable and connector. So far everything has the same result. The system doesn't even seem to try and boot.