Hello hopefully this is posted in the proper place. I have an asus g73j running windows 10 64. Was using windows 7 upgraded to 10 shortly after the machine wont boot.  Startup reapir cant fix the problem. Ive tried running the rebuildbcd command it comes back and finds no windows installations.  I tried renaming the bcd but to no avail.  Any other SUGGESTIONS?  Your help would be very very appreciated!You should have posted in the Windows forum.

It seems that the on-line Windows 10 update sometimes fails.
The recovery procedure WORKS well if the install was mostly good. Otherwise, it fails.

In the documentation you were told to have a backup METHOD in place.
Also, you had to option of making an image of Windows 7 before you did the install.
Do you have the original Windows 7 install media? If so, you can start over again. You install Windows 7 again and then upgrade to Windfows10.

OR

Here is an alternative procedure I have used.
Install Windows 10 from the ISO file from Microsoft. To activate Windows 10 it will ask for the Windows 7 install media.

Here is reference that may help:
http://www.howtogeek.com/244678/you-dont-need-a-product-key-to-install-and-use-windows-10/
The site has links to the Windows 10 ISO. But they are not working now. So try:
https://www.microsoft.com/en-us/software-download/windows10ISO
That should be what you need.

Hey thanks so much for the reply!  I did decide to reinstall windows 7. During the reinstall the machine restarted and began to run chkdsk and it looks like its finding hundreds of disk errors.  Deleting corrupt attribute record so on and so on.  Is this machine done for? HahaYou need to check:
A. Power supply voltages
B. All connections
C. Fans, are the running?
D. RAM chips
E. Graphics card overheating.

Of course, the most likely things a hard drive at the end of its life.
EVEN having said that, there is even the chance your have a capacitor or two that has blown. It still does happen.
https://www.youtube.com/watch?v=AvlNKZ8GzEg
You LOOK at the capacitor. The one that looks bad is bad. 
Is the machine done for because there are hd errors? No - but you may need to replace the hd.Awesome ill give those things a try thanks!