No bootable medium found

[jjr]

I have a Macbook Air running Mac OSX Seirra 10.12.3.
I have been running VirtualBox with Windows 8 and Explorer 7 because I work in Walmart's Retail Link software as a vendor and for some crazy reason it only works with Explorer 7 and I do not own a Windows machine.

Anyway, it was working fine until last week, when I tried to lacunh Windows and it said I needed to register with Microsoft.
I thought this odd as I have been running it for a couple months.

Anyway, I tried to simply Remove the Windows 7 and reinstall it, but when I do it says:
FATAL: No bootable medium found! System Halted

So I tried to install other Windows versions, same thing.
Then I used the uninstall tool and tried to get rid of VirtualBox and reinstall from scratch.
Did all that, Same Error.

Then I did a search in the finder for any VirtualBox files, found some and deleted them, then reinstalled VirtualBox and now when I try to install Windows when it gets to the screen to "Please select a virtual optical disk file or a physical optical drive containing a disk to start your new virtual machine from", it is no linger giving me an automatic option that it had created before.

In short, i can not figure out how to COMPLETELY start over with VirtualBox.
Any suggestions?

[socratis]

i can not figure out how to COMPLETELY start over with VirtualBox.

You sound like a fairly new user to VirtualBox. Since you are expected to know some basic terms before we engage in a meaningful discussion, I would suggest to start be reading three small chapters from the User Manual:

• 1.2. Some terminology,
• 1.7. Creating your first virtual machine and
• 1.8. Running your virtual machine.

I don't believe that you've ever installed your Windows VM, but you somehow got one. Do you have a CD, did you download an ISO or a VM, did someone give you something? Don't answer these before reading the manual please.

From the dialog for the activation, it sounds that you installed one of the trial versions, which does need to be activated after a period of usage, that is normal.

[jjr]

I read the items.
I must have downloaded a trial version, b/c my computer has no CD drive.
I do not remember exactly how I did everything, it was a couple months ago.
I just remember needing it (as indicated on the Walmart website), going online, finding a link to put Windows on a Mac and following the instructions. When I was done VirtualBox was installed, and a version of Windows worked and I installed Explorer 7 and viola, I could use Explorer in full screen on my Mac to get into Retaillink Walmart page.

So I guess right now I have a VM installed, but no Windows software.
Where can I download it from and will I need to buy it?

[socratis]

b/c my computer has no CD drive.

Your computer may not have a CD/DVD but your "virtual" computer can have several.

I do not remember exactly how I did everything, it was a couple months ago.

Well, if you can re-trace your steps, how can you expect us to guess what you did or didn't do?

Where can I download it from and will I need to buy it?

There are several 30-day trial versions of different Windows versions that you can download from Microsoft. Go to https://www.modern.ie/ and select "Virtual Machines" (https://developer.microsoft.com/en-us/m ... tools/vms/). Choose a Windows version, choose VirtualBox as the platform and download the zip file. Read the instructions for the installation.

I'm not sure what you can buy these days from Microsoft (if you can still buy Win7 for example), but you'll have to ask them.