Hello All, I must say that after reading a dozen pages on the Gigabyte thread I am impressed with the answers to many of the postings.
My own situation is has my totally confused:
New system build
P55a-UD3
Intel i5-760
2x2GB G.SKILL F3-12800CL7D-4GBECO Eco PC3-12800 DDR3-1600 CL7-8-7-24 1.35V
850w Power Supply
XFX HD5850
Win7 64bit
Everything looked OK during Win7 install, then on a reboot after HD 5850 drivers were install, - no POST.
The Power Supply Fan and the CPU cooling fan spins for a moment when the power on button was pressed.
I then pulled the UD3 and benched it with only
P55a-UD3
Intel i5-760
1 stick of Ram (in white slot)
850w Power Supply
XFX HD5850
+PS2 keyboard
+Monitor
No POST - no beeps
Tried the other stick of RAM in white slot
No POST - no beeps
Tried no RAM,
No POST - beeps
- My thought was a possible Motherboard short, so I bought a P55a-UD4P
Same results
- My next thought was a bad Video card, so I bought a HD 5570
Same results
Now whats got me baffled:
Installed HD 5850 in PCI-E slot x8
Installed HD 5570 in PCI-E slot x16 ( I know its running at x8 )
system POSTS OK
Video out is only from HD 5570 in primary PCI-E slot
Woo hoo! Quick as I can, I QFlash the BIOS to the latest revision - F13.
(no discernible help from new BIOS)
Win7 wanted new drivers for a few items but gets up and running with 'Standard VGA Driver', video out only from HD 5570.
Win7 detects and installs HD 5850 driver (still no video out from HD 5850).
system in stable at this point (12hrs of Prime95)
Win7 detects and wants to install HD 5570 drivers, if I allow the drivers to be installed Win7 will not restart, only through safe mode can I access the system to remove the HD 5570 driver.
So, two Gigabyte motherboards (P55a-UD3 and P55a_UD4P) and two video cards later I am still struggling.
I wish I had access to another CPU to test, but my cash is blown.
The way I am running the (stable but crippled) system now:
P55a-UD4P (F13)
Intel i5-760
4x2GB G.SKILL F3-12800CL7D-4GBECO Eco PC3-12800 DDR3-1600 CL7-8-7-24 1.35V
850w Power Supply
HD 5570 - primary PCI-E
HD 5850 - secondary PCI-E
Win7 64bit (standard VGA driver)
Any thoughts ?
DJH
Does not
My own situation is has my totally confused:
New system build
P55a-UD3
Intel i5-760
2x2GB G.SKILL F3-12800CL7D-4GBECO Eco PC3-12800 DDR3-1600 CL7-8-7-24 1.35V
850w Power Supply
XFX HD5850
Win7 64bit
Everything looked OK during Win7 install, then on a reboot after HD 5850 drivers were install, - no POST.
The Power Supply Fan and the CPU cooling fan spins for a moment when the power on button was pressed.
I then pulled the UD3 and benched it with only
P55a-UD3
Intel i5-760
1 stick of Ram (in white slot)
850w Power Supply
XFX HD5850
+PS2 keyboard
+Monitor
No POST - no beeps
Tried the other stick of RAM in white slot
No POST - no beeps
Tried no RAM,
No POST - beeps
- My thought was a possible Motherboard short, so I bought a P55a-UD4P
Same results
- My next thought was a bad Video card, so I bought a HD 5570
Same results
Now whats got me baffled:
Installed HD 5850 in PCI-E slot x8
Installed HD 5570 in PCI-E slot x16 ( I know its running at x8 )
system POSTS OK
Video out is only from HD 5570 in primary PCI-E slot
Woo hoo! Quick as I can, I QFlash the BIOS to the latest revision - F13.
(no discernible help from new BIOS)
Win7 wanted new drivers for a few items but gets up and running with 'Standard VGA Driver', video out only from HD 5570.
Win7 detects and installs HD 5850 driver (still no video out from HD 5850).
system in stable at this point (12hrs of Prime95)
Win7 detects and wants to install HD 5570 drivers, if I allow the drivers to be installed Win7 will not restart, only through safe mode can I access the system to remove the HD 5570 driver.
So, two Gigabyte motherboards (P55a-UD3 and P55a_UD4P) and two video cards later I am still struggling.
I wish I had access to another CPU to test, but my cash is blown.
The way I am running the (stable but crippled) system now:
P55a-UD4P (F13)
Intel i5-760
4x2GB G.SKILL F3-12800CL7D-4GBECO Eco PC3-12800 DDR3-1600 CL7-8-7-24 1.35V
850w Power Supply
HD 5570 - primary PCI-E
HD 5850 - secondary PCI-E
Win7 64bit (standard VGA driver)
Any thoughts ?
DJH
Does not
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