No upgrade path from Vista to Windows 10. You will need to buy a installation key for each Laptop you want to upgrade.
PCWorld is currently running an offer that expires the end of June 2020.
Get Windows 10 Pro for $39.99 - PCWorld
I bought one even though I have no need at the moment, couldn't pass up the price. All you really get is the installation key and a link to download Windows 10 (Multi version, Home/Pro) which you can also download using the Microsoft Media Creation Tool. If you use the MCT you can have it create a Installation USB Flash drive for you that you can then use to Clean Install Windows 10 with, which is the only option you will have since there is no upgrade capability from Vista to Windows 10.
I would recommend creating a image backup of your system before you do the clean install since the drive will be completely wiped. I recommend using Macrium Reflect Free or Home and backing up to an External USB Hard Drive (1TB USE SATA III SSD available for $50 to $0).
I would do the backup first then do a Clean Install of Windows 10 (use MCT) to the Laptop before buying a key. When asked for the key, select Skip. If the install works, then buy the Windows 10 key. No point in spending money if the Laptop is not capable of running Windows 10.
What is the full model number of the Dell laptops, what are it's specs. How much RAM do they have, how big is the hard drive?
- 1 GHz or faster processor or SoC processor
- 1 gigabyte (GB) for 32-bit or 2 GB for 64-bit RAM
- 16 GB for 32-bit OS 20 GB for 64-bit OS Hard disk space
- DirectX 9 or later with WDDM 1.0 driver Graphics card
- 1 GHz 32-bit (x86) or 64-bit (x64) processor with support for PAE, NX, and SSE2
Edited by Ztruker, 25 June 2020 - 12:58 PM.