Question Mobo isn't getting power

Apr 13, 2020
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I recently moved a Lenovo 90GU 510A - 15ABR motherboard into a new RBG case.

I installed a 700W 24 pin power supply. I ordered a 24 pin to 10 pin connector as the lenovo mobo only had a 10 pin connector.

The power supply powers up as do the 3 fans on the case.

The mobo fan nor the system fan is turning on.

I don't know if the 24 pin to 10 pin is enough to get the mobo working or not.

I've tried to removing the ram, graphics card and even the hard drive so that the only thing connected is the 24 pin to 10 pin connector.

The only thing I haven't done is connect the POWERSW single pin connector to anything on the mobo. Because I have no idea where it would go.

Any thoughts? Thanks