Yes, basically; but the Microsoft
Media
Creation
Tool (
MCT)that Pat mentioned will format (erase)
EVERYTHING on that Flash Drive; so if there's anything on that flash drive you need, back it up elsewhere to an external hard drive or an online Cloud Storage account such as Microsoft OneDrive, GoogleDrive, or Dropbox.
If you're not sure how to do this, simply buy a brand new flash drive instead. Right out of the package insert the new flash drive into the 2nd computer's USB port, go to the link for the MCT tool and it will format you new flash drive and install a bootable image of W10 onto that flash drive which you can then install onto the original computer that's having a problem.
**WARNING: You'll need at least 50GB fee on that 2nd computer's hard drive, in order to create the MCT image which then gets copied onto the new flash drive. Additionally, the current W10 file image size is 9.3GB so you MUST HAVE AT LEAST A 16GB FLASH DRIVE IN ORDER TO CREATE THE W10 BOOTABLE MEDIA ON IT!! If you fail to do both these things, the MCT flash drive will NOT WORK!!
Many folks are not aware of these 2 requirements, and grab an 8GB or even a 4GB flash drive, whatever they have lying around in their office drawers; and for the most part it will not work.
In 2-1/2 years of playing with W10, I was only able to create a W10 MCT flash drive image on an 8GB flash drive, one time, and haven't been able to repeat that since Microsoft's Anniversary Update release (v1607 b14393.x) in Aug. 2016.
However, the most important thing we can tell you to do is to be aware that W10 Updates are still glitchy and there is a very high risk that you can lose some or all of your Personal Data on that computer by attempting to re-do a failed W10 Update!!
So, we recommend that you make sure to BACKUP ALL PERSONAL DATA FROM THIS COMPUTER PRIOR TO ATTEMPTING FURTHER HARDWARE TESTING OR SOFTWARE REPAIRS TO FIX YOUR FAILED W10 UPDATE IN ORDER TO AVOID IRRETRIEVABLE DATA LOSS!!!
This is imperative that you do this!! If you don't know how to do this, ask a friend or take your computer into a licensed Computer Professional and pay him to do it for you. Since the release of W10 July 29, 2015;
over 90% of my Clients who attempt to repair a failed W10 update or W10 upgrade usually crash their computers, and wind up bringing them to me and have to pay me to fix them!!
If you must do this yourself because you can't afford a repair Tech, then at least take sensible precautions with your Personal Data.
REMEMBER, ONE WRONG CLICK OF YOUR MOUSE--AND ALL YOUR STUFF CAN BE LOST!! 
It's your choice.
Post back if you get stuck again, or need help with backing your data up to external media. We are here 24x7x365.
<<<<BIGBEARJEDI>>>>
A Mac won't work; however, some of our expert Techs have been able to create a W10 bootable flash drive with a 16GB drive using Mac Bootcamp or another virtual terminal type program on the Mac. But Macs vary widely, and unless you have a Mac with an Intel CPU processor in it to run the Windows emulator, I don't believe it will work.
