Hi, I have just purchased a Sapphire R9 270X Toxic card and when I install the hardware and connect the two power cables, my computer no longer boots (cannot access BIOS or Windows). The card lights up and the fans spin, but I receive no signal to my monitor and additionally, my keyboard and mouse do not light up.
If I unplug the power cables to the card and use the onboard graphics then I can boot my machine to access the BIOS and also load Windows with no problems. The card is correctly installed in the PCI 3.0 slot and I have since removed the card and installed my old HD7800 which is also working fine.
I've tried disabling the onboard graphics completely and have set PCI as the primary display, as well as leaving both of these on their default auto, but the problem persists.
I did wonder if there was simply not enough power but the Corsair TX750 should be more than sufficient.
Here are the details of my machine:
PSU: Corsair TX750
CPU: 3.45 gigahertz Intel Core i5-3570K
Motherboard: GA-Z77-D3H
BIOS: American Megatrends Inc. F8 02/21/2012
Card: Sapphire R9 270X Toxic
RAM: 8Gb
OS: Windows 7 Professional 64 bit (though not getting to the OS)
If I unplug the power cables to the card and use the onboard graphics then I can boot my machine to access the BIOS and also load Windows with no problems. The card is correctly installed in the PCI 3.0 slot and I have since removed the card and installed my old HD7800 which is also working fine.
I've tried disabling the onboard graphics completely and have set PCI as the primary display, as well as leaving both of these on their default auto, but the problem persists.
I did wonder if there was simply not enough power but the Corsair TX750 should be more than sufficient.
Here are the details of my machine:
PSU: Corsair TX750
CPU: 3.45 gigahertz Intel Core i5-3570K
Motherboard: GA-Z77-D3H
BIOS: American Megatrends Inc. F8 02/21/2012
Card: Sapphire R9 270X Toxic
RAM: 8Gb
OS: Windows 7 Professional 64 bit (though not getting to the OS)
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