I've browsed through this forum, but haven't found a post that reflects the same equipment I have, although the problem is similar.
My machine is an Asus P5Q SE Plus with an Intel core 2 Duo E8500 3.16Ghz CPU, and an nVidia Quadro FX3400 PCI-E 256MB video card, running Windows 7 -64bit.
I originally had 4 1GB Kingston Dual-channel RAM sticks installed in all 4 slots, and this has been working fine with the BIOS set with all Auto parameters.
I purchased two G.Skill F2-8500CL5D-4GBPK 4GB dual-channel kits to increase my RAM capacity to 8 GB. However, the machine won't boot when I occupy the other two (black) slots with the sticks.
Going through the various posts for some pointers, I've manually set the following parameters in the latest (v2204, 08/28/2009) AMI BIOS:
Set DRAM speed to 1066
Set timings to 5-5-5-15
Set Northbridge voltage to 1.40 volts
Set RAM voltage to 2.10 volts
Set RAS# to RAS# Delay to 2
Set Write Recovery Time to 8
Set Row Refresh Cycle Time to 80
All other settings are on [Auto]
Alas, I haven't had any success with these settings. The machine boots and runs fine with two slots (yellow) occupied, but when I install the other two sticks, all I get is the machine fans starting up and a black monitor screen. The monitor doesn't come out of standby in this instance, i.e. the power button remains amber rather than switching to white when it receives a signal. I've tested each individual stick with MemTest86+ v4.00 for three hours each and it reports no errors.
Is there any other settings I must make or have missed to get the full 8 GB to work?
My machine is an Asus P5Q SE Plus with an Intel core 2 Duo E8500 3.16Ghz CPU, and an nVidia Quadro FX3400 PCI-E 256MB video card, running Windows 7 -64bit.
I originally had 4 1GB Kingston Dual-channel RAM sticks installed in all 4 slots, and this has been working fine with the BIOS set with all Auto parameters.
I purchased two G.Skill F2-8500CL5D-4GBPK 4GB dual-channel kits to increase my RAM capacity to 8 GB. However, the machine won't boot when I occupy the other two (black) slots with the sticks.
Going through the various posts for some pointers, I've manually set the following parameters in the latest (v2204, 08/28/2009) AMI BIOS:
Set DRAM speed to 1066
Set timings to 5-5-5-15
Set Northbridge voltage to 1.40 volts
Set RAM voltage to 2.10 volts
Set RAS# to RAS# Delay to 2
Set Write Recovery Time to 8
Set Row Refresh Cycle Time to 80
All other settings are on [Auto]
Alas, I haven't had any success with these settings. The machine boots and runs fine with two slots (yellow) occupied, but when I install the other two sticks, all I get is the machine fans starting up and a black monitor screen. The monitor doesn't come out of standby in this instance, i.e. the power button remains amber rather than switching to white when it receives a signal. I've tested each individual stick with MemTest86+ v4.00 for three hours each and it reports no errors.
Is there any other settings I must make or have missed to get the full 8 GB to work?
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