A new driver can cause the server to crash for a number of reasons. For example, if the new driver corrupts critical system files, or if the new driver conflicts with existing drivers, the server can no longer function and will eventually crash. Additionally, new drivers may not be optimized for older versions of the OS or hardware, and as a result, can cause unexpected crashes. Finally, sometimes new drivers are designed to work in conjunction with other new software updates that have been installed on the server, and if these updates are incompatible with one another, then the server can crash as a result.