The Windows 8.1 compatible drivers are on the Dell FTP Website but not on Drivers and Downloads: [URL]
When will Dell provide new AMD Radeon HD 7670M graphic driver for windows 8.1? As Windows 8.1 is already released officially and Windows 8 driver for AMD Radeon HD 7670M not working for windows 8.1 on Dell inspiron 15r 5520. �
AMD Graphics Driver For Windows 8.1