I've been having a long-running issue with my 290x. Basically, under *any* mantle driver (anything 14.x), when I first boot and reach the desktop, within 3-5 seconds my screen will go black and my pc hard locks.
Upon restart, I get a POST message stating "Overclock failed".
Reverting to pre-mantle drivers (13.12 or Asus' 13.152 driver) fixes this issue entirely, but of course, leaves me with any number of performance problems in newer games (hi there watch_dogs).
To ensure that this is not a simple overclocking issue, I've run my cpu/memory at stock settings, I've run memtests and so on to ensure no problems there. Every time it comes down to running a 14.x driver that this occurs, regardless of my other settings. The first time this occured was on a clean install after a format in early february. I've made sure to properly uninstall a driver each time I've changed it.
Lastly - IF I can start a fullscreen application fast enough before the blackscreen occurs, I can run the pc for as long as I want without issue. It will only occur when first booting onto the desktop, never after, never in-game/app.
My full system specs:
Cpu: i7-4930k, tested @ stock / 5.1GHz
Memory: 32GB (4x8GB) Patriot Viper @ 2133MHz 10-11-10 timings
GPU: Asus r9 290x DirectCUII OC Edition, factory oc settings only.
Motherboard: Asus x79-Deluxe. bios 0802
Sound: Asus Xonar Essence STX
PSU: Coarsair hx1000w* (this PSU is rather old, its a carry over from my old 2x HD5970 CF folding rig - thought I should mention it)
SSD: Corsair ForceGT240gb
OS: Win7 x64 sp1, fully updated.
Any thoughts? I've been unable to test my card in another machine (people with tiny towers, ugh), so I can't discount the possibility of faulty hardware elsewhere. However, I can say that this issue *does not* occur using my older 7970. Only with the the 290x with a 14.x driver.
Edit: Left out my OS - derp.