Using an acer x173w this always happens to me. I re-install windows. it works great for about 2-3 weeks. then all of a sudden i boot my computer and the monitor is just a standard pnp monitor and runs on completely unsupported resolutions. This happens in windows vista, windows xp and now windows 7. This is extremely frustrating as none of the resolutions look right. its either squished one way or the other. This has happened with multiple graphics cards aswell, I do use a vga-dvi adapter but have tried 2 different ones of those now too and still the same. I cant get my computer to recognize it and no way to contact acer for help since its not under warranty. Any suggestions?