I have a HIS R9280x iPower IceQ x^2 (quite the name...). Here is a screenshot of the GPU-Z output:

I have an EVGA Z75 SLI Motherboard.
I was previously running a MSI R7770 with no issues.
What happens now is the system sometimes won't give me any video output when booting. I THINK it's loading all the way into windows (most of the time), I simply get no output. To boot, I have to restart my computer anywhere from 2-10x before i'll get video output.
Once booted, the card works flawlessly in gaming etc. So i'm strongly suspecting its a compatibility issue with the motherboard, rather than with the card.
EVGA has been no help at all. In fact, their own FAQ says I should enable "Legacy Mode" on my BIOS:
https://www.evga.com/support/faq/afmviewfaq.aspx?faqid=59421
This is extremely ironic, because their motherboard has no Legacy mode option. Thanks EVGA.
When I slot my R7770 back in, the computer typically works without issues.
Because of this instability, I have left my intel internal graphics enabled. Strangely, when I get no video output, and I plug the HDMI into my motherboard instead of my video card (without restarting), I still won't get signal. Overall, it's a very weird problem.
This got me thinking. My video card has a BIOS switch, and 2 BIOS'. However, unlike other 280x's, i'm not sure if one switch has a Legacy BIOS, and another is UEFI. I have tried booting using both switches and there is no difference, leading me to believe that whatever BIOS on the card, it just has two copies of the same one.
So, does anyone know if my card comes with a legacy, or UEFI bios? If legacy, then based on my theory I should be able to flash a UEFI bios and have my problem solved. If UEFI, then I guess I could try flashing a legacy BIOS just to see if it makes a difference... Does anyone know where I can find these BIOS files, and which ones are compatible. Or perhaps there are some other ideas?? ANy help would really be appreciated.
Issue resolved. See post #11 (page 2)
I have an EVGA Z75 SLI Motherboard.
I was previously running a MSI R7770 with no issues.
What happens now is the system sometimes won't give me any video output when booting. I THINK it's loading all the way into windows (most of the time), I simply get no output. To boot, I have to restart my computer anywhere from 2-10x before i'll get video output.
Once booted, the card works flawlessly in gaming etc. So i'm strongly suspecting its a compatibility issue with the motherboard, rather than with the card.
EVGA has been no help at all. In fact, their own FAQ says I should enable "Legacy Mode" on my BIOS:
https://www.evga.com/support/faq/afmviewfaq.aspx?faqid=59421
This is extremely ironic, because their motherboard has no Legacy mode option. Thanks EVGA.
When I slot my R7770 back in, the computer typically works without issues.
Because of this instability, I have left my intel internal graphics enabled. Strangely, when I get no video output, and I plug the HDMI into my motherboard instead of my video card (without restarting), I still won't get signal. Overall, it's a very weird problem.
This got me thinking. My video card has a BIOS switch, and 2 BIOS'. However, unlike other 280x's, i'm not sure if one switch has a Legacy BIOS, and another is UEFI. I have tried booting using both switches and there is no difference, leading me to believe that whatever BIOS on the card, it just has two copies of the same one.
So, does anyone know if my card comes with a legacy, or UEFI bios? If legacy, then based on my theory I should be able to flash a UEFI bios and have my problem solved. If UEFI, then I guess I could try flashing a legacy BIOS just to see if it makes a difference... Does anyone know where I can find these BIOS files, and which ones are compatible. Or perhaps there are some other ideas?? ANy help would really be appreciated.
Issue resolved. See post #11 (page 2)