Have you ever thought about how to start an SMPS (switched-mode power supply) without a motherboard. This may be necessary for troubleshooting your SMPS, or to add an additional SMPS to your system. You can start an SMPS without a motherboard, using a paperclip. This tutorial will show you how to remove and test the SMPS. If you have already deleted the SMPS, continue with step 4.
Step 1. Open the case of your computer
Before you begin, make sure your computer is completely shut down and off AC power. Remove the screws from the side panel of your computer. You just need to remove the side panel.
Step 2. Remove the cables from the SMPS to all components of your computer
Note: some cables are secured with a clamp. Be sure to remove the clips before attempting to remove the cables.
Step 3. With the SMPS removed, take a paperclip and bend it into a 'U' shape
Step 4. Locate the SMPS's 24-pin connector (Obviously this is the larger SMPS connector)
Locate the green and black wire. Note: There will be one green and many black wires. You can select any black wire you want.
Step 5. Plug one end of the bent paperclip into the green connector and the other end into the black connector
Step 6. Turn on the SMPS with the wire connected
The SMPS should now turn on. If it does not turn on, insert the paperclip more firmly and try again. If the SMPS still does not turn on, your SMPS may be broken.