Hello, I've seen this problem a couple of times on this forum but no one found a solution, or they didn't post it.
Whenever I do a cold boot, no video signal comes out. Windows starts just fine though, I can hear the logon sound.
If I connect the HD4600 instead, everything works just fine.
In order for the R9 280x to work, I have to use the computer for a couple of hours and then shut it down and plug in the 280x.
Bios is F7.
Specs are:
i7-4770k
2x HyperX Predator 8GB
OCZ Vector 120GB
1TB Samsung HDD
Sentey modular 1100W.
I did send my video card to RMA and they told me it is working just fine.
I didn't have any problems with my previous setup using the same PSU.
Can somebody give me a hand here, please?
