- Check your power cord and ensure it’s properly connected to the wall outlet.
- Check whether the power button is properly connected, and that it hasn’t gone haywire.
- Check if all the cords are properly connected to the PC, or if any are loose or missing.
- Try a different power cord or power outlet.
- Check if your PC is over-heating; try placing it in a cool, dry place.
- Clean the fan and RAM.
- Check if the PSU is not overloaded by adding a new component.