Sorry for the spelling mistakes, I'm using google translate. I have recovery discs of some models of ASUS, will be putting in 4shared and providing for the staff, I ask a little patience here in Brazil because the internet is not very fast, below is the link to folder with files for download at I'm currently uploading the discs G74SX-A1, I am adding the second disk yet, but the first is already available for download, I hope this helps.
link
http://www.4shared.com/folder/EJbyKTnz/_online.html