Many of us, including me were facing some problems using the latest Catalyst 15.7.1 Version.
The display driver 15.200.1062.1002 was not compatible with many of the PCs, I faced INTERNAL_POWER_ERROR & DPC_WATCHDOG_VIOLATION in BSOD.
But good news is AMD's updated driver version 15.200.1062.1003 is working like a charm for me. It gave me no errors and running smoothly.
AMD has put this driver in their 15.7.1 Catalyst, so download from here: Download Drivers and install. You'll find version 15.200.1062.1003 was installed instead of 15.200.1062.1002.
Hope all of you will be happy to see the result.
But Switchable GPU users please 1st install your primary GPU driver.