My new computer won't turn on

There are several reasons a new computer may not power on right out of the box. Luckily many of the possible causes are easy to resolve.


First, make sure the master power switch on your PC's power supply is flipped to the On position. See below:

  1. If your computer is not booting up when you press the power button, it could be caused by a surge protector or UPS. Using a UPS or surge protector that cannot supply enough power to the system can lead to stability issues and prevent booting. Try plugging the system directly into a wall outlet temporarily to troubleshoot.
  2. If your system shows no signs of power when the power button is pressed (no fans or lights turn on), try discharging the power supply. Unplug the computer, press the power button 10 to 15 times consecutively, then plug it back in and try powering on again. 
  3. If your system still isn't booting, check if any lights or fans turn on when you press the power button. If so, you may not be getting video on your monitor. Check the monitor cable connection and ensure the monitor is set to the correct input. On MAINGEAR computers with dedicated graphics cards, make sure the monitor is plugged into the graphics card, and not the video outputs on the motherboard (disabled on systems with dedicated graphics cards). See below:


If you have questions or concerns, please contact one of our MAINGEAR Support agents: (908-620-9050) or support@maingear.com

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