I've asked you now NINE
times if Win7 came preinstalled on the PC, whether there is a COA sticker, even gave you a picture of one you also ignored.
The fact is Asus cannot legally sell you a PC with preinstalled Win7 without a COA sticker attached. It doesn't happen.
You do not need the Recovery partition or Disks to Clean Reinstall - Factory OEM Windows 7
with the official installer for your licensed version provided in Step 1 and the Product Key on COA sticker. You own that copy of WIn7 for life to reinstall whenever and however you please on that machine. It also qualifies you for Win8.
I cannot remember it ever being this difficult in four years and 32,000 posts to get a point across.