You really don't want to disable safe mode..(I really don't think you can)
What are the problems you are facing?
What is the model of you computer that you are trying to install Windows 7 on? (example, HP Pavilion Dv5)
Now reading you two posts tells me that maybe your boot device like you hard drive is in the wrong boot order or your BIOS does not see your hard drive.. Have you made any changes to your computer before installing Windows 7? (hard drive, new video card, etc)
The reason you don't want to disable safe mode is that it helps you determine what is wrong with your computer. By installing just the basic
drivers to make Windows 7 start-up. Are you able to get into safe mode still, since you re-installed Windows 7?
Hope this Helps..and Happy Holidays