Hey guys, I've just finished building a desktop for the first time in 15 years, because it's a whole lot cheaper than buying, and because I get to customize certain things for my own needs. Here's the problem I'm having: While almost everything is new, a friend donated the RAM to me (she wasn't sure if it worked or not), and I used a spare hard drive, as well as an old video card I had lying around. After hooking everything up, and powering it on for the first time, the CPU fan spins, the fan case spins, the video card fan spins, and you can hear the hard drive power on (though it doesn't do anything). It isn't going to POST, it's just sitting there. I have a few theories: Firstly, the RAM could be bad, and I'm 75% sure this is the problem. It uses 240 pin DDR3 1333 non-ecc unbuffered RAM. I'm waiting on Amazon to ship me a 4 GB stick of RAM since that was dirt cheap. I'm hoping that fixes the problem, but if it doesn't I've only used $17 to find out. Secondly, I have removed the video card and used the onboard video. That didn't change anything, so I don't think it's the video card. Third, I unplugged everything else except the CPU, RAM, and motherboard, and it still sat there running the fans, but not going to POST. Finally, I removed the motherboard to make certain the little motherboard stands weren't in a place where screws weren't located, so that they didn't accidentally ground the motherboard. No issues there. Now, here's the thing: I haven't built a PC in 15 years, and they've changed a lot since then. So I'm not 100% certain I've set everything up correctly. I'd use the beep codes, but this motherboard didn't come with a PC speaker, nor did the case. So I'm having to figure it out with trial and error. Again, I'm 75% sure it was the RAM, but your help would be appreciated. Oh, and one more thing: The CPU came with a heatsink and I was going to apply thermal compound to the heatsink, but there was a grid of... something on the bottom that looked like paste, but I didn't do it because I'm not sure what that is. I've checked around and I can't find a backside of the same cooler I have, so I don't know if that's pre-added, or if it's just part of the design. When my arctic silver gets here the same day as the RAM, I might apply it anyway, just to be sure. Specs: CPU: AMD FX-6300 Processor (with stock cooler) MOTHERBOARD: Gigabyte AM3/AM3+ 78LMT USB3 R2 (dual channel bios) MEMORY: (pending) POWER: EVGA Bronze 450w VIDEO CARD: Sapphire Radeon HD 4670 X2 1 GB STORAGE: Toshiba 7200 RPM 1 TB HDD Pictures: If you could, take a look at the motherboard here, and help me make certain I connected things correctly.