I would do the following:

Download all the latest drivers from the ASUS site.

Remove all other hard drives from the laptop

Verify that the drive is set to ACHI in the BIOS

Install windows fresh, don't use ASUS recovery media ( DO NOT FORMAT THE DRIVE, IT SHOULD BE PRE-FORMATTED FROM THE FACTORY )

After windows is finished:

Verify that TRIM is running

Click start orb > in the 'Search programs and files' area type CMD > right click CMD and run as Administrator

type in the following : fsutil behavior query DisableDeleteNotify

hit your enter key on the keyboard

It should come back as :

DisableDeleteNotify = 0: This indicates that TRIM is enabled

If it is, EXCELLENT!

Proceed to install the drivers

Do windows updates

Go to the following URL:

http://www.ninite.com/

(ninite is a auto installer for the most common PC apps)

Install whatever software you'd like

I suggest:

Chrome (replace with browser of your choice)
VLC
EVERYTHING under run-times
Adobe Reader
Microsoft Security
Malwarebytes Anti Malware
Steam
7-Zip


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