Error 512 case fan not detected

[Aroldo]

I just replaced the previous 120mm case fan with a new 200mm fan. But every time i start the pc, it cant boot cause the error in the title. I must push f1 in the bios to let windows booting.
The fan works fine, is correctly plugged and is detected in the bios monitoring section, also in windows.
It has 3 pin connector and mobo has only that one 3 pin connector for case fans.
The mobo is an orrible mobo from a HP oem pc. This pc came with a little case fan, but recently i replaced the case with one bigger. And also changed the fan with the 120mm one i previously mentioned. In this case i have not encountered the 512 error.
I dont know why that occurs now.

Thank u all for the help

 

[Shaun o]

Because a 200mm fan has a slower Rpm than a 120mm fan.

In your Bios you have an alarm where if the rpm speed is below it`s set value it will do one of two things say the fan is not there or has an error. Or presumes it`s not working if running below the rpm speed set up in fan monitoring of your bios.

All you have to do is check what the rpm value of the 200mm fan is default value.
Then go into your bios to the power section and lower the rpm value if you can so it does not trigger the error or alarm.

Or turn the option off to monitor the Rpm of that case fan.
The Rpm range of the 200mm fan is below for example the 600 rpm trigger, why you are getting the the 512 error.