Hi [NAME].p , You may refer to AMD web site for Radeon™ Pro WX 5100 Previous Drivers 
hi! I am using a Dell Precision 3630 Tower with AMD Radeon Pro WX5100 in my organisation for proprietary 3D intensive application.  Recently, the OS was updated to the latest version of windows 10 & this is causing our 3D application to suddenly crash with a "Back Buffer's device is not valid" error leading to loss of unsaved work. Windows is updated, Dell drivers are updated so it falls on our 3D application development team to fix this error internally & they are not able to pinpoint the root cause of this error. What I need? I need older versions of AMD Radeon Pro WX1500 to test if one of those versions can resolve the back buffer issue. Our IT support team insists Dell has removed the old versions of drivers & only latest one shown below is available on Dell website. Please help me to find earlier versions of this driver on Dell website. Thank you!
Earlier version drivers for AMD Radeon Pro WX1500 installed on Dell Precision 
3630 Tower.