I recently reassembled a computer of mine, making sure everything plugged in where it was supposed to be plugged in. The first day, I had no monitor hooked up, and it turned on and all the fans started spinning when the power button at the front was pressed. Yesterday, I hooked up an Acer K222HQL monitor to the whole thing and the computer turned on, but the monitor said "no Signal", which was probably because the GPU fan wasn't plugged into the card, but I have no way of telling because now for some reason my computer won't turn on at all. I press the power button, and nothing happens. Before you ask, the strip with the power button is plugged into the correct points. I've tried unplugging it, turning the PSU on and off and then plugging it back in. I will press the button and a a single light at the front flickers for a moment and then goes dark, no fans, nothing. It's a brand new GPU, a Solid Gear SDGR-600X ATX, but I thought it blew out.