This is a rather complex problem. First I should give system specs: Alienware M17x R3 OS: Windows 7 64-bit CPU: Core i7 2760QM 2.40 GHz Sandy bridge GPU: AMD Radeon HD 6900M 2GB 16GB RAM I should also add that all of my drivers are up to date. Ok, so this problem began when I noticed the frame rate had dropped significantly when I started Diablo 3 versus the last time I had it started up. It was running fine on maxed graphics, but now it was very slow. I opened device manager to find that my comp had switched to integrated graphics due to the AC cord being unplugged and it switching to battery power, and normally I could do a Fn+F7 to switch graphics cards back to my discrete card, however now the discrete card had disappeared completely. After entering BIOS on restart, it said discrete graphics not detected. After a few restarts the card was detected again, however after another AC unplug it disappeared again. I contacted Alienware support and after a screen sharing session he somehow managed to get it to discover the card again (by luck). When it disappeared again I emailed support, and after numerous restarts I got it working again when Alienware support contacted me. Since I had temporarily fixed the problem, he couldn't do much for me but he (after opening a screen-sharing session) fiddled with my graphics settings and said there wasn't much he could do. So we get up to now. I was playing Diablo 3 when Alienware support called, and everything was running smooth. After he tweaked my graphics options, the framerate on Diablo 3 dropped significantly. I tried tweaking my graphics options, power options, and reset defaults to no avail. Then I had my browser open with a video about increasing performance, and tried one of the suggestions and it worked. Problem is, when I close the browser the framerate dropped again, so I've been running the game with my browser open to keep the framerate up. What I think is happening is that the sandy bridge system is not just switching to integrated graphics, but is also setting my graphics card to a completely off state instead of an idle state. I was wondering if anyone could help me figure out why the graphics run better when my browser is open, or how I can get it to stop switching to integrated graphics when unplugged. I'm fairly sure I'll end up having to send it in for warranty work, but is there any possibility of me figuring this out without doing that? I swear, this is the last ATI card I ever buy, I've had nothing but problems with them.