Recently, I replaced my old 750 W power supply with a new 850 W 80+ gold one. However, I'm running into a problem: when I connect my video cards, my computer won't start. I've tested both my GeForce RTX 3070 and 3060, and the system powers on without issues when the graphics cards are disconnected. I've tried replacing the CMOS battery, resetting the pins, and changing cables, but nothing seems to work. If anyone has suggestions on how to resolve this, I would really appreciate it!
3 Answers
I found the issue! One of my cables wasn’t a full 8-prong like I thought—it was a mix with a 6-prong and a 2-prong component. Once I combined them correctly, one of my video cards started working!
Did you use any of the power cables from your old power supply to connect the graphics cards? Sometimes, mixing and matching cables can cause issues.
Make sure you're using the cables that came with the new power supply. Mixing old and new might lead to connection problems.
I've actually tried both sets of cables, just to be sure.
I tried using both the new and old cables.