QUOTE(terradrive @ Dec 8 2014, 01:42 PM)
I still got the black screen on Catalyst 14.4.
I don't know what's the cause now, I disconnected the PSU PCI-E 6 pin and connect it using molex -> 6 pin power connector.
Anybody have the black screen problem here with their 290/290X?
i also faced the same problem on my first month using r9 290 and resolved it using this method:
-reinstall driver
-disable ccc at system startup.. ccc is a noob oc software btw

.
-overvolt your card a bit using afterburner or trix
-core and memory can also be overclock if you want since you already overvolt the card
-by using afterburner, disable ulps and enable force constant voltage
-do not set apply overclock at system startup.. set oc profile instead and oc manually everytime you boot up
a friend told me that some of r9 290/290x gpus having problem with its voltage stability at stock and cause it to BSOD due to lack of voltage to the core.. so by overvolt it a bit will resolve the prob.. the key solution are disable ccc and overvolt the card.
but im using the reference model.. not sure whether this can resolve the tri-x. good luck