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PC Won't Start

PSU LED check, reseat GPU/RAM, monitor 'no signal' fixes.

Transport vibration often loosens components. Don’t panic, it’s probably just a loose cable.

First, check Known Issues.

Quick diagnosis

  • No lights, no fans, nothing: PSU switch, PSU cable, or dead PSU. Check the switch on the back (I = on). Try a different power cable. Try a different outlet.
  • Motherboard LED on, but no fans spin: Check the front panel power button connector. Try shorting the power pins with a screwdriver (staff can help).
  • Fans spin, but no display: GPU cable (make sure it’s in the GPU, not motherboard). Try a different video output. Reseat the GPU.
  • Fans spin briefly then stop (boot loop): RAM not seated. Remove and reseat all sticks. Try one stick at a time.
  • Beeps on startup: 1 long + 2 short = GPU. Continuous = RAM. Refer to your motherboard manual for other codes.
  • Gets to BIOS but won’t boot OS: Boot drive cable loose, or boot order changed. Check BIOS > Boot Priority.

1. Power Supply (PSU)

  • Switch: Check the switch on the back of your PSU. Is it set to “I”?
  • Cable: Push it in firmly. Try a different outlet (or ask your neighbor to test theirs).
  • LED: If the motherboard LED is on, it has power. If not, check the PSU or the cable.

2. Monitor “No Signal”

Fans are spinning, but the screen is black?

  1. Input: Press the “Source” or “Input” button on your monitor. It might be waiting for HDMI while you are using DisplayPort.
  2. Cable: Unplug and replug both ends.
  3. GPU: Did you plug the monitor into the graphics card, or the motherboard? (Classic mistake.)

3. Reseating Components

If the PC beeps or loops on startup:

  1. Power off. Unplug the power cable.
  2. RAM: Remove the memory sticks and snap them back in firmly. You must hear the click.
  3. GPU: Remove the graphics card and put it back. Check the PCIe power cables too.

4. If nothing works

Ask a neighbor to test with their power cable or monitor. If it still fails, find an organizer. We have some spare parts for testing, but we can’t promise miracles.

Still stuck?

  1. Check Known Issues first – if it’s listed, we already know.
  2. Post in #support on Discord with this info:
    • Seat number (e.g. Row 4, Seat 12)
    • What’s broken, one sentence
    • What you already tried
    • Screenshot or error message
  3. If no reply in 15 minutes, come to the organizer desk.