Hello. I have a problem with my fairly new R9 290X (got my new build the 26th of June): since I got it, I haven't been able to use any driver past 13.12. As soon as I finished building my rig, I installed Windows 8.1 x64 and the 14.4 drivers. Everything was going fine, BF4 was going fine too. Then, I went into the graphics options and changed from DirectX to Mantle and the whole system froze. Mouse wasn't moving, sound wasn't working, keyboard caps light wasn't changing, etc. I had to hard reset, but after BIOS POST, I kept getting a blank screen/black screen. Uninstalled 14.4 from safe mode and installed 13.12 and everything works. Now, I know that I can keep using 13.12 but I really would like to use more recent drivers, with Mantle. If I try to install anything past 13.12 (I tried 14.1, 14.2, 14.3, 14.4, 14.6, 14.7), even with a complete clean install of Windows 8.1 or Windows 7, after the driver installation + reboot, I can't open any applications that are somewhat related to the GPU, like: GPU-Z, HWMonitor, MSI Afterburner, etc, but I can open applications like Windows Explorer or Firefox. The biggest problems, though, are the freezes. If I open Internet Explorer, the system freezes. Same thing if I try to open any games, sometimes I get a freeze even in 30 seconds after logon, doing absolutely nothing. What could be the problem here? My card's memory is Hynix by the way. Thank you.