http://www.microsoft.com/en-us/software-download/windows10 here it is right from Microsoft select the correct version Core or pro single language. 32 bit or 64 bit you can create a bootable USB or download an ISO your choice.

I doubt Asus is going to create one for you!!! I suppose that the notebooks sold after yesterday will have the same Asus Backtracker as they did for Win 8.1 If you have clean installed or even upgraded to 10 most likely attempting to create a Backtracker USB Recovery media will not work.
You can easily download all the latest hardware driver from Asus Support Downloads good images are much more reliable. You should create on each stage of a clean install that way you can go back to any point of the install. I make on with windows only, then again with hardware drivers installed, then again with windows updated, then again with all my software installed I keep that one and start a disk image with everything installed and create weekly incremental backups. I back up my data daily. Any issues arise I can restore any of these images or back ups with out any issues. Windows itself will restore to a earlier date or time. Refresh or restore. So there you go. I wouldn't expect much help from Asus on this, but then again they are still selling G751's so maybe so.

If you still on 8.1 and haven't formatted your hard drive you should be able to create the backtracker USB, however that will only put you back to win 8 or 8.1 which ever your notebook came with. So maybe when new user come in you might get one that has the exact model you have except with windows 10 you could get them to upload their recover partition for you?

Sorry I forgot which forum I was in. Asus hasn't supplied a restore disks since before the G75's with the G75 we created our own DVD or BR recover set. The G75Vx on Backtracker was used

I didn't me just you, I ment that Asus is unlikely to post any win 10 driver for these older notebooks much less a recovery partition for windows 10

Yes that is all backtracker ever did was copy your Asus recover partition to the USB Drive. If you still have that recovery partition it should work. But that will only get you back to where your notebook was when it was shipped.

There seems to be lots of info coming in these forums on the upgrade to 10 also you can look and should get information on 10 from the tenforum

I personally don't plan to upgrade my notebook for a few months, if ever. If your reading these threads your seeing what others are having success with and issues with and how they solved them.

1. Do not clean install
2. Use the Windows update to update to window 10
3. Now you can clean install
4. Please read the thread on this window 10 upgrade. Also go to and read the information in the tenforums
5 If your not willing to research this you can expect to have issues that will not be easy to resolve.