Hi. I would like to apoligize if I am posting in the wrong section. I am new to this forum. I have allot of problems with my new computer. I just built a new computer. Here are the specs: MSI 790FX-GD70 AM3 AMD 790FX ATX AMD Motherboard - Retail Western Digital Caviar Black WD1001FALS 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive XFX HD-585A-ZNBC Radeon HD 5850 (Cypress Pro) 1GB Black Edition 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFire Supported ... - Retail AMD Phenom II X4 965 Black Edition Deneb 3.4GHz Socket AM3 125W Quad-Core Processor Model HDZ965FBGMBOX - Retail G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL7D-4GBRM - Retail OCZ ModXStream Pro OCZ700MXSP 700W ATX12V V2.2 / EPS12V SLI Certified CrossFire Ready 80 PLUS Certified Modular Active PFC ... - Retail I turn on the computer and I get nothing except for spinning case fans, CPU fan, and GPU fan. Some of the LED's on the mobo also light up. I get no HDD noise. No computer the beeps. I cannot get into BIOS. It seems like the computer is not even booting up. I get no signal in monitor or power to keyboard or mouse. Here are things I have already tried: 1. I have already triple checked the cpu/ heat sink placement. It was correct. 2. Took out the PSU and tried on another computer. It worked flawlessly. 3. I took out the memory, gpu, HDD out. I only left the CPU/heatsink and PSU. I turned it on and I still get no beeps. Can someone help me narrow the problem down more? Right now I think its either the mobo or CPU. What do you guys think?