Ok, first time post here, I need some serious help. First off, I have had my computer for about a month now, and had this card installed and everythign was running awesome, even did the pipeline unlocking and everything was peachy with 16p, getting awesome fps in WoW on 1600x1200. Then, 2 days ago, my performance crashed through the floor. 20fps at 1028x768. And a strange buzzing noise started up inside my case whenever I was doing anything graphically intensive that required rendering. The sound seems like its almost coming from the north bridge / CPU area, but the vid card is real closeby to it. I have stopped all fans individually and the noise is NOT coming from a fan. Moreover, the buzzing intensifies when I hit a visual fps snag, and softens up after the frame is rendered. Examples of when the buzzing intensifies, and performance decreases: Viewing a website with active banners / active content (Yes, even hits fps snags on these!) Playing any kind of game (WoW, CoV, CoH) Scrolling through pictures in folders Opening up a movie copied on the HD in DVD Shrink, when it does that pre-analyze (this makes it go NUTS) The sound can best be described as a high pitch hiss with a buzz. Noticeable over case fans when Computer is across the desk. I have no idea where to go now. WHat do I fix? How do I fix it? I can't live with 20fps on low res! System Specs: Prescott P4 HT 3.2gHz 1Gb OCZ DDR400 Dual Channel 160Gb WD HD Connect3D X800 GTO VIVO (Unlocked to 16p) MSI 915G Combo Mobo Hercules 500W Power Supply I have overclocked the system before, usually my core is running at 3.4gHz. Per ATITool, my max core for the GPU was 545mhz but I kept it at 470mHz cuz at 500 it was pushing 70 degrees load. Mem was always set to 500mHz. Please help edit add: Also, it does the hiss/buzz thing when I try to install software. Maybe this isnt a VPU issue, maybe so... still any help is appreciated.