Sorry for the newbie question, I just don't understand how vista loaders work, but since I have a Dell E510, It seems like I'm gonna have to use them to activate Vista sp1. But not knowing much, the idea of messing with the BIOS scares me. So, my question is: if something goes wrong with the loader, will a hard disk format and clean install of vista take me back to where I am? or do I have to do something else to restore the BIOS original state? Thanks for your help.