Do you want to confirm whether your machine is an assembly machine or a brand machine first? If it is a brand-name machine, do you mean that the original digital signature is in the factory condition? If this is the case, the drivers provided by the manufacturers may not be used after reinstalling the system, because some manufacturers may not pass the relevant certification in their own driver CDs. If it is an assembly machine, if you care about this, you can try to reinstall the system, because your phenomenon is very abnormal. Digital signature is an authentication introduced by Microsoft, which is used to reduce the incompatibility between the system and the hardware driver. The official name is WLP(Windows Logo Program), and the popular name is WHQL (which is also called by general driver websites, but strictly speaking, it has been invalid since the MDA 2008 agreement in 2007). Ordinary players rarely pay attention to this part. I hope my answer can help you. If you have any other questions about digital signature, please write to me.