If you are not happy with the Windows 10 upgrade, you can easily downgrade to Windows 7 or 8.1. Before you proceed it is important to backup your data.
Here are the steps to downgrade.
i. Start Menu>Search>Settings
ii. Find and choose Update & Security
iii. Choose Recovery>Go back to Windows 7 or 8.1
iv. Select Get Started.
You would get your old OS back. During the process, you would be asked the reason to downgrade. You can choose either the pre-mentioned reasons or give your feedback. Since, the company is offering a quick rollback option; you would not lose your data but to be on the safe side backup everything important.
If 30 days have already passed since you upgraded to Windows 10, you need to downgrade the old fashioned way, which is by using a bootable DVD or flash/pen drive of the OS.
i. Insert the disk or pen drive in the DVD/USB drive and go to boot menu by pressing F2, F8 or F9 depending on your motherboard manufacturer.
ii. Choose the key that would ensure your computer boots from your DVD/USB drive.
iii. Thereafter, you would need to follow the process and choose options as per your requirements that will appear on your screen.
iv. Since, you would be downgrading, choose Custom instead on Upgrade when you are asked to do so.
v. Your copy of Windows needs to be activated again and you have to install the drivers as well.