Hello. I've searched around quite a bit and have found a lot of problems similar to mine but not enough like mine to base a decision around. Anywho, my component specs are... AMD Phenom 9950 CPU Asus M3N-HT Delux Mobo CoolerMaster Real Power Pro 1000w ESA & Cooler Master COSMOS1010 ESA 4 sticks of 1026 OCZ SLI Eidition PC8500 RAM (1 stick installed at the moment) 2 EVGA SSC Edition GeForce 9800 GX2s for quad-SLI 2 Maxtor DiamondMax 21 500GB HDDs (not installed so it doesn't matter) Vista Home Premium 64-bit (cant get to post so it doesn't matter) I've already read into all the obvious reasons of why my computer might not be booting up, but for obvious reasons, I want to be 100% sure this isn't just something I did wrong, because I waited a long time for this machine and I'm so excited to get it running it's killing me. I will give you all the info I think is relevant, but keep in mind this is my first time ever building a computer from all new parts; from scratch. I'm tech savvy enough (i think) to be doing this, but I am definitely a noobie. Alright, I have nothing but a single stick of Ram, A VGA, a keyboard and my monitor hooked up. Asus was very clear on how to hook up the onboard speaker, so I should be hearing POST beeps but when I power up the lights all come on, the CPU, case and PSU fans all run but it just wont boot up. My monitor light stays a constant green and the screen just flashes NO SYNC. No POST occurs. I tried taking out the VGA to get an error code but no good. I tried different sticks of RAM and no RAM at all and no beep. This Motherboard is AM2+ and can support 1066mhz ram speeds (with a quad core processor) so there isn't an incompatibility issue here that I can see. I'm guessing my PSU is more than beefy enough to power the few things I have in it right now. Also, the soft reset button doesn't do anything. I know I have all those plugged in right and solid. I tried reseting the CMOS by taking out the battery and moving the jumpers from the default position as the manual that came with my mobo said to do. No luck, but I'm going to try leaving it like this for 30 minutes, just to be safe. Logically, it doesn't seem like the RAM or the VGA is the culprit. It seems safe to assume my brand new CoolerMaster PSU isn't DOA since everything is getting power, though I've read that doesn't necessarily mean it's working properly. My motherboard is on spacers, and I used washers just to make sure there was no short circuiting going on. I haven't checked the CPU yet because I am not convinced it's worth the trouble yet. It came with thermal paste pre-applied on the heat sink. I don't want to have to figure out how to clean off a CPU without destroying it unless it's absolutely necessary. I hear you are supposed to use Goof-off or something, but I'd be nervous doing it, honestly. Hell, I'm nervous even touching all this expensive equipment. It's too late to second guess myself now though, I have to get it working somehow. I'm not going to be happy about having to replace anything out of this computer, but if something is wrong, what do you think it is? I'm really out of guesses if resetting the CMOS again doesn't work. Thanks in advanced!