How to Install or Replace a power supply

Desktop won't power on? How to install a power supply in a computer? When i press the power button on desktop nothing happens. How to install a power supply (PSU). How to replace a Power supply?Desktop is dead?How to Install or Replace a power supply

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How To Troubleshoot a Bad or Faulty Power Supply (PSU):

1. Check that the AC Power Cable is Connected Firmly to the Wall Outlet and PSU.
2. Check the AC Outlet that the Power Supply is Plugged Into.
3. Check the On/Off switch on the Power Supply itself.
4. Check the Voltage Switch on the Power Supply.
5. Check the 20/24 Pin ATX Power Connector and 4 Pin ATX Power Connector
6. Use Observations on the Power Supply to Determine if it's Faulty.

1.If your motherboard has a power LED on it, is this light turned on. (The motherboard power LED will normally glow even when the system is powered down.) If it is glowing this confirms the board is receiving power from the PSU and the problem may lie elsewhere.
2.Can you see or hear the fan inside the power supply spin when you try to power on the system. If you do not see or hear it spinning this can be a sign of a bad power supply.
3.Did the power supply make any crackling or popping noises when you tried to start the system? If so, this is a sign that a component inside the power supply has failed.
4.Did you see a spark or smoke come out of the power supply? If so this is another sign that a component inside the Power Supply has failed.
5.Does the power supply smell like burning electrical components. If so this is another sign of component failure inside the power supply.

7. Use Another Power Supply for Testing

If your power supply is under warranty send it into the retailer or manufacturer for RMA replacement.
If your power supply is outside of the warranty period you will need to purchase a new power supply.

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