You cannot use the AMD drivers. Dell customizes all laptop drivers to work on the Dell board including AMD, Nvidia, Intel, etc. Get the correct customized drivers from your model's download page at Dell Downloads.

Welcome to the Dell Community @Abdo01140 

Important Information:

Before you install this AMD package, you must install the Intel graphics driver "FIRST".

E6540 AMD Radeon HD 8790M graphics driver: [SECOND]

https://www.dell.com/support/home/en-us/drivers/driversdetails?driverid=cyt1r&oscode=wt64a&productcode=latitude-e6540-laptop

E6540 Intel graphics driver: [FIRST]

https://www.dell.com/support/home/en-us/drivers/driversdetails?driverid=www9y&oscode=wt64a&productcode=latitude-e6540-laptop

Best regards,

U2

The drivers on Dell's website are very old, from 2015