Here we have the driver for ATI RADEON HD8670M for Windows 7 operating system.

This driver will also fit for all ATI HD8600 series graphic cards:

PCI\VEN_1002&DEV_6660
PCI\VEN_1002&DEV_6660&CC_0380
PCI\VEN_1002&DEV_6660&CC_038000
PCI\VEN_1002&DEV_6660&REV_00
PCI\VEN_1002&DEV_6660&SUBSYS_05C91028
PCI\VEN_1002&DEV_6660&SUBSYS_05C91028&REV_00
PCI\VEN_1002&DEV_6660&SUBSYS_05EA1028
PCI\VEN_1002&DEV_6660&SUBSYS_05EA1028&REV_00
PCI\VEN_1002&DEV_6660&SUBSYS_07921025
PCI\VEN_1002&DEV_6660&SUBSYS_07921025&REV_00
PCI\VEN_1002&DEV_6660&SUBSYS_196E103C
PCI\VEN_1002&DEV_6660&SUBSYS_196E103C&REV_00
PCI\VEN_1002&DEV_6660&SUBSYS_1970103C
PCI\VEN_1002&DEV_6660&SUBSYS_1970103C&REV_00
PCI\VEN_1002&DEV_6660&SUBSYS_1983103C
PCI\VEN_1002&DEV_6660&SUBSYS_1983103C&REV_00
PCI\VEN_1002&DEV_6660&SUBSYS_1985103C
PCI\VEN_1002&DEV_6660&SUBSYS_1985103C&REV_00
PCI\VEN_1002&DEV_6660&SUBSYS_216C103C
PCI\VEN_1002&DEV_6660&SUBSYS_216C103C&REV_00
PCI\VEN_1002&DEV_6660&SUBSYS_2170103C
PCI\VEN_1002&DEV_6660&SUBSYS_2170103C&REV_00
PCI\VEN_1002&DEV_6660&SUBSYS_21AD1043
PCI\VEN_1002&DEV_6660&SUBSYS_21AD1043&REV_00

You can download this driver from THIS LINK: