After installing a new HD7770 and XFX 450W PSU, the PC fails to boot
There is no monitor signal, it doesn't even show the bios screen, and after the initial hard drive start up noise there is no more activity after this. The power cable is attached, and I have tried a different power cable. I am trying to connect through HDMI.
Putting in my old graphics card, or using the onboard is fine without the new card installed. Putting in the HD7770 with no power cable connected is also fine, using the onboard graphics. There is no option in the BIOS to disable the onboard graphics.
I have also tried another HD7770 and experience the same problem.
Here are the specs:
Dell Inspiron 620
Intel Core i3 3.1GHz
8gb ram
Win 7 64 bit
XPX 450w
Gigabyte HD7770 ghz edition.
There is no monitor signal, it doesn't even show the bios screen, and after the initial hard drive start up noise there is no more activity after this. The power cable is attached, and I have tried a different power cable. I am trying to connect through HDMI.
Putting in my old graphics card, or using the onboard is fine without the new card installed. Putting in the HD7770 with no power cable connected is also fine, using the onboard graphics. There is no option in the BIOS to disable the onboard graphics.
I have also tried another HD7770 and experience the same problem.
Here are the specs:
Dell Inspiron 620
Intel Core i3 3.1GHz
8gb ram
Win 7 64 bit
XPX 450w
Gigabyte HD7770 ghz edition.