|'Startup sounds' as in the windows music or 'startup sounds' as in you hear fans and drives spinning up? If the former then you've got some kind of video problem. Try booting to safe mode. If it loads to the desktop set resolution to 800 x 600 and reboot to normal mode. Then try setting a higher resolution if desired.|
If the latter, well it still sounds like video. Do you have both an on-board video port and an added card? If so try both.