This is my second build. My first one was four years ago and went just fine. At the time, everything was new, and I was able to plug and play without any issues at all. Now that my PC is getting long in the tooth, I've decided to upgrade
many of the components. The case, PSU, video card, and SATA HDD are the same as my old build - so as far as I know, they are known good components. I purchased an ASUS P6T motherboard, an Intel i7 920, a Corsair liquid cooler for the CPU, and a set of 3 1GB DDR3 1333mhz DIMMs from Crucial (they are on the ASUS approved vendor list in the manual).
I spent a day taking the old one apart and putting the new one together. Power on - no POST. Then I start to troubleshoot for the next few weeks. I get the no memory beeps when I remove all components and DIMMs. I've tried a single stick of RAM in every slot and each of the three sticks on their own. Any time I have a stick of RAM in place, I get no sound on power up. The fans spin, the lights turn on, the DVD drives spin, but no beeps to indicate no VGA detected. I've called tech support twice, and have since RMA'd both the motherboard and CPU with the same symptoms each time. I've worked through the no-POST-steps-to-do-before-starting-a-thread without success. The one thing I haven't tried is breadboarding. I don't think there's a short because the standoffs, motherboard tray, and case are the same as my old ATX build. I've tried resetting the CMOS several times with no luck. Never any video output or no-VGA beeps.
The one thing that has changed, is that I've had to swap out the 4-pin CPU power cable for the 8-pin one on this new board. Could my 8-pin socket on the PSU be dead? It's a 550 watt PSU. If it was underpowered, it would at least be able to POST with no drives, right? The only thing I could think of is that maybe all three RAM sticks are bad and any time I put one in, it prevents the motherboard from getting past the memory check to the VGA check.
The motherboard manual says that for a "fully configured system" I should have something in the 700 to 1000 watt range. I presume "fully configured" means all PCIE and PCI slots are filled and I have 6 DIMMs installed. I'm not anywhere near that loaded, even if I had all my drives and components installed.
My power supply is this one:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?Sku=ULT31851
I've noticed something else as well. I get the same results when I completely disconnect the 8-pin CPU power from the motherboard. It could be that my PSU just isn't supplying any power to my CPU. I wish I had another power supply to test it out.
What else could it be?
many of the components. The case, PSU, video card, and SATA HDD are the same as my old build - so as far as I know, they are known good components. I purchased an ASUS P6T motherboard, an Intel i7 920, a Corsair liquid cooler for the CPU, and a set of 3 1GB DDR3 1333mhz DIMMs from Crucial (they are on the ASUS approved vendor list in the manual).
I spent a day taking the old one apart and putting the new one together. Power on - no POST. Then I start to troubleshoot for the next few weeks. I get the no memory beeps when I remove all components and DIMMs. I've tried a single stick of RAM in every slot and each of the three sticks on their own. Any time I have a stick of RAM in place, I get no sound on power up. The fans spin, the lights turn on, the DVD drives spin, but no beeps to indicate no VGA detected. I've called tech support twice, and have since RMA'd both the motherboard and CPU with the same symptoms each time. I've worked through the no-POST-steps-to-do-before-starting-a-thread without success. The one thing I haven't tried is breadboarding. I don't think there's a short because the standoffs, motherboard tray, and case are the same as my old ATX build. I've tried resetting the CMOS several times with no luck. Never any video output or no-VGA beeps.
The one thing that has changed, is that I've had to swap out the 4-pin CPU power cable for the 8-pin one on this new board. Could my 8-pin socket on the PSU be dead? It's a 550 watt PSU. If it was underpowered, it would at least be able to POST with no drives, right? The only thing I could think of is that maybe all three RAM sticks are bad and any time I put one in, it prevents the motherboard from getting past the memory check to the VGA check.
The motherboard manual says that for a "fully configured system" I should have something in the 700 to 1000 watt range. I presume "fully configured" means all PCIE and PCI slots are filled and I have 6 DIMMs installed. I'm not anywhere near that loaded, even if I had all my drives and components installed.
My power supply is this one:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?Sku=ULT31851
I've noticed something else as well. I get the same results when I completely disconnect the 8-pin CPU power from the motherboard. It could be that my PSU just isn't supplying any power to my CPU. I wish I had another power supply to test it out.
What else could it be?