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Can't boot, DRAM Q-LED is lit

Level 7
I was trying to upgrade my graphics card so I took out the old one. However the new one didn't fit, so I put the old one back in. I booted but got "no signal" on my monitor. I realized I forgot to connect the power connectors to the graphics card. I connected them and booted again, but still got no signal. I noticed the DRAM Q-LED was on (yellow light). I didn't touch the RAM sticks, but I reseated them to be safe. But the Q-LED stayed on, and still got no signal. I removed the graphics card completely, and still have the same issue.

Did I somehow fry my RAM? What else could the problem be?

System specs:

  • Motherboard: ROG STRIX B550-F GAMING (WI-FI)
  • CPU: AMD Ryzen 5600x
  • RAM: Crucial Ballistix 32GB Kit (2 x 16GB) DDR4-3600
  • GPU: MSI Radeon R9 390