Hey I've recently set up a dual boot with window 7 on my dell PC and it was all working ok. I had to fix some things like wireless and activating the ATI driver. I did this on my 32" downstairs but once I brought the PC back up to my room and connected it to my 26" I don't see the Ubuntu loading icon anymore and the screen just stays black when i choose to boot Ubuntu. I then have to hold the power button to shutdown the PC. It's using a HDMI cable so I though that it should just pick up the resolution but it hasn't and it doesn't work with the VGA cable either... anyone have any idea on how to fix this?