I recently purchased a Sapphire Radeon HD 6580 and found out when it arrived that it was much larger than the picture showed. We are upgrading all the pc's in my house and changing around monitors. Were using 40inch hd tv's with HDMI inputs as computer monitors but me and my roomate switched sets. When i installed my new video card into my pc (eVGA P55) the card overlaps the sata ports to the HDD. To resolve this i moved both HDD's one port back, so theres nothing in sata port 1, primary HDD in sata port 2, and slave in sata port 3. When i turn the computer on it fires up but gives me a series of beeps im unfamiliar with and then the normal beeps as if it is continuing to boot normally, but i have no picture and the television says "No Signal". Im not at home atm but i will be later and can get specs for anything requested. As far as i can remember i tried HDMI on both my tv's channels and its DVI-D (dual) i think but it may have been a DVI-I. Either way no picture. I know theres a multitude of things that can cause this but i was wondering what would be the most fruitful attempt at fixing this. Basically my question in a nutshell: 1. Can i put my primary HDD in Sata Port 2 with no problems? 2. Does it matter which slot i put my video card in on a crossfire board if im only using one card? 3. What are the most likely causes of the video card not working? Heres all ive tried (im working on 3 other pc's so i havent spent to much time on it.): 1. Moved Sata connections one slot back and tried videocard in primary pci-e slot 2. Same as above but with both an HDMI monitor and DVI monitor simultaneously. 3. Moved Sata connections to original configuration and video card into secondary PCI-e port, with both monitors attached. 4. Tried moving to different HDMI port and channels on television. I know that when i originally setup my HD tv i had to connect to a CRT monitor then tell it from that monitor to send image to my HD tv, but that was a different video card, i really am bad with this kind of stuff, and id say im still novice on computer hardware, any help would be super, always is from techspot staff and members!