Right click and go to Properties, I bet its error Code 12.
Nope, it's a error code 31.
I uninstalled and re installed the driver. But I can't even boot on the GPU now
EDIT: Booted after 3 force restart. Still error code 31
https://support.microsoft.com/en-us/help/942959/error-message-when-you-attach-a-pci-express-expansion-chassis-to-a-com
Just like I said......its for Error 12 or Error 31.
intsall the latest CU