Windows 10: Wiped towers needing operating systems

The business I work for just bough 12 towers from a school that closed down. The 12 towers were originally windows 8.1pro. But they have been wiped clean of an operating system. I would like to know how would I go about installing a new operating system in all of them, if at all possible upgrade to at least windows 10 and a low cost. We are a non profit and trying to get these computers working for our clients to use for school, job searches, and other things they may need to do.

:)

 

need list of usb bootable Operating Systems

I am looking for a good list of operating systems you can run from a usb or dvd.

If not a list, then folks can just post their top picks.

I want these to run from the usb/dvd without installing on the system or getting in the way of the system that exists on the hard drive.

Thanks in advance.

 

' choose an operation system to start"

Hi Bob,

To better assist you, do let us the complete message that you receive.

Sometimes, this could be due to two operating system installed in your computer. Just to make sure this is not the case, I suggest you to try the steps below:

1. Press Windows key + R.

2. Type msconfig and press enter.

3. Click the "boot" tab and check if there are any other operating system listed.

4. In addition, change the timeout time to 3 seconds(default)

Let us know the result, we will be glad to help if you need further assistance.

 

Programs not working

In post 26 there were steps listed to fix the operating system corruption.
Are you able to follow them?
In post 29 was the suggested dism repair command.