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Abisa13
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I was passing my main board to another case With a new power supply But the computer won’t turn on

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HP Z420 workstation
Microsoft Windows 10 (64-bit)

It don’t show red lights or nothing but when I blug the power supply it looks like the fans want to spins 

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DGroves
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the HP z420 power supply is not ATX compatable, however there do exist the nessary 18 pin to ATX 24 pin power adapters

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Abisa13
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I order a 24 pin to 18 pin but didn’t work my power supply is a Corsair TX650M but I ordered another power supply that 850W to see if that my 

 Problem 

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DGroves
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there are various 18 to 24 pin adapters, for diffrent  pinouts

 

YOU MUST USE the correct 18 to 24 pin adapter (it will state which systems it works with) if your HP model is not listed then it will not work

 

 

https://www.amazon.com/11-inch-24-Pin-18-Pin-Adapter-Workstation/dp/B071NL4VK2

 

https://www.aliexpress.com/item/PSU-ATX-24Pin-to-18Pin-Adapter-Converter-Power-Cable-Cord-for-HP-Z42...

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