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Why my computer is not turn on but fans are running?
One of the reasons your computer won’t boot but the fans spin could be a bad RAM. In this case, remove the RAM from its slot, then clean it and return it back to the same slot or try a different slot altogether. You can also try switching positions of the RAM cards to different sockets.
Does the fan always run on a power supply?
No, often the PSU fan will not run unless it is required to cool the PSU. It depends on a number of factors if the PSU will be that smart.
How can I tell if my power supply fan is working?
The Answer
- Plug the power supply into the wall.
- Find the big 24-ish pin connector that connects to the motherboard.
- Connect the GREEN wire with the adjacent BLACK wire.
- The power supply’s fan should start up. If it doesn’t then it’s dead.
- If the fan starts up, then it could be the motherboard that’s dead.
Should I turn on PSU fan?
It’s the same principle as case cooling – you only run the PSU fan as fast as necessary to keep its internal temperature under control. On that type of design, the PSU fan will NOT start up right away.
Why is the PSU fan not connecting to the power supply?
Other reasons include loose connection of the PSU fan connector to the 2-pin header (located on the PCB of the Power Supply) or some component failure (capacitor, resistor, etc.) in the circuitry that is involved with the running of PSU fan.
How to stop a Dell power supply fan from running?
Thank you for writing to the Dell Community Forum. Please refer to this article http://dell.to/212YZWq. Power on the system and start tapping the F2 key to enter the BIOS, check if it is still the same. Update the latest BIOS (Basic Input Output System) resolves this issue by adjusting the fan control algorithm.
Is it possible to replace the fan in a power supply?
It is possible to replace the fans in your power supply, but working in a power supply can be dangerous and it may be hard to fit a fan in. If you want something quiet the easy way, just buy a quiet power supply.
When do I plug in power, fan starts running loudly?
In the last couple of days, when I plug the power strip into the receptacle, before I can turn the computer on, a fan starts running loudly. It is similar to the way it runs during a normal power up except that it doesn’t slow down to normal speed and I have not yet turned on the computer when this occurs.