You may or may not still get 10 for free, but you first have to see if 10 is compatible with your device.
The free upgrade to Windows 10 offer from Microsoft expired on the 29th July, 2016.
You will have to contact MS support and they may be able to assist you with a free upgrade to 10..
Also read this information:
All the Ways You Can Still Upgrade to Windows 10 for Free
Here's how you can still get a free Windows 10 upgrade | ZDNet
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Windows 10 media creation tool on the Software download page
"Start fresh with a clean installation of Windows 10"
https://www.microsoft.com/en-us/software-download/windows10startfresh
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Upgrade to Windows 10: FAQ - Windows Help - Microsoft Support
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Windows 10 supported upgrade paths:
✔ = Full upgrade is supported including personal data, settings, and applications.
D = Edition downgrade; personal data is maintained, applications and settings are removed.
https://docs.microsoft.com/en-us/windows/deployment/upgrade/windows-10-upgrade-paths
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First thing to do is to make sure that you have the correct
system requirements and that your Computer Manufacturer supplies the
correct Drivers for 10 for your Model Number.
Driver Downloads:
Acer:
http://us.acer.com/ac/en/US/content/drivers
Advent:
http://www.adventcomputers.co.uk/product-downloads
Alienware:
http://support.alienware.com/Support\_Pages/Restricted\_Pages/driver\_downloads.aspx
Asus:
http://www.asus.com/support
Dell:
http://www.dell.com/support/drivers/us/en/19/ProductSelector
eMachines:
http://www.emachines.com/ec/en/US/content/drivers
Fujitsu:
http://www.fujitsu.com/us/support/
Gateway:
http://us.gateway.com/gw/en/US/content/drivers-downloads
HP:
http://www8.hp.com/us/en/drivers.html
Lenovo:
http://support.lenovo.com/en\_US/downloads/default.page#
LG:
http://www.lg.com/us/support/software-manuals
Samsung:
http://www.samsung.com/us/support/downloads
Sony Vaio:
http://esupport.sony.com/perl/select-system.pl?DIRECTOR=DRIVER
Toshiba:
http://support.toshiba.com/drivers
"Windows 10 System Requirements"
https://www.thurrott.com/windows/windows-10/3884/windows-10-system-requirements
https://www.microsoft.com/en-US/windows/windows-10-specifications#sysreqs
If you read those Microsoft's system requirements for 10, you
will find that if you only go on them you will be sadly disappointed in
performance.
For reasonable performance should have at least:
2 gigahertz (GHz) or faster processor.
4 gigabyte (GB) of RAM for 32-bit or 8 GB for 64-bit
500GB hard drive
DirectX 9 or later with WDDM 1.0 driver
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Detailed information on Minimum hardware requirements:
https://docs.microsoft.com/en-us/windows-hardware/design/minimum/minimum-hardware-requirements-overview
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Some Manufacturers have listed Model Numbers tested with 10 at their website:
Acer - Windows 10 Creators Update
ASUS System Look-up - Find out if your system runs Windows 10.
Dell computers tested for Windows 10 November 2019
Update and previous versions of Windows 10
The following Gateway laptops, desktops and tablets have been tested as being suitable to install Windows 10 Creators Update
HP Products Tested with Windows 10
Lenovo devices tested for Windows 10 version 1809 (October 2018
Samsung - Find out if your system runs Windows 10.
Sony - What do I need to install Windows 10 on my PC?
Toshiba - Models tested
Toshiba Windows 10 Upgrade Information
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If you do have to buy Windows 10:
How to buy Windows 10:
http://www.microsoftstore.com/store/msusa/en\_US/cat/Windows/categoryID.70036700
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If you are upgrading to 10 at least make a system image backup for two reasons.
- Some people report they don't get the free upgrade and want to reinstall 7.
- If you don't do the system checks and 10 is incompatible with your device and it becomes inoperable.
These are quite good programs to use for Complete PC Backup and are free:
"EaseUS Todo Backup Free"
http://www.todo-backup.com/products/home/free-backup-software.htm
"Welcome to EaseUS Todo Backup Manual"
http://www.todo-backup.com/support/help/
http://www.todo-backup.com/download/docs/User\_Guide.pdf
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"AOMEI Backupper Standard"
http://www.backup-utility.com/free-backup-software.html
"Configure and automate AOMEI Backupper in Windows"
https://www.winhelp.us/configure-aomei-backupper-in-windows.html
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"Macrium Reflect Free"
http://www.macrium.com/reflectfree.aspx
"Macrium Reflect Tutorial"
http://www.macrium.com/webtutorial/tutorial.asp
Cheers.