Done 4 systems here three 64 bit and one 32 bit and no problems.
But if you are worried go into Control Panel - Backup & Restore
Then on the top left hand corner there is an option to "Create a system image"
This will make an image of your computer that you can roll back to easily if things go wrong.
I make one of these every 10 days just in case and it was a life saver when Bit Defender was sent a duff update and bricked my PC.