cpu cable

Today I switched out my old power cables for new sleeved cables. Somehow my new gpu 2x8pins fits in perfectly in my cpu power and I didn’t realize until later I checked. I tried booting it up without my gpu in, right when I pressed the boot button the whole pc went dark and no more power went...

Hi All, I recently decided to upgrade my PC case, so after ordering one and installing my hardware into it, the power supply unit will now only turn on if it is just connected via the 20 pin motherboard connector and the 8 pin PCIe connector. The motherboard lights up and fans spin, but...