alanps :
It's been a while since I don't format my computer and the OS is not working so well as before.
Anyway, I'll format the C disc (where OS is installed) but I also have an HDD on F with a few programs and video games.
Would it be wise to format both of them and download and install everything from zero in both drives? Or just the C where the OS is installed?
Thanks.
HELLO to Argentina! I'd first learn WHY it's not performing as well. Too many programs on startup is usually the case. Think of an Amusement park. When they first opened they only had their equipment to set up. They opened quickly and ran fluently. As time goes on the user builds new things in the amusement park. Now instead of 20 or thirty things to open up they have 60 things to open. This slows opening of the amusement park(aka Windows) and slows the day to day operations.
What's a user to do? I use
https://www.piriform.com/ccleaner/download . I open it, click on Tools and then I click on Start-up. I look at what is set to auto-start. I then delete everything that doesn't need to automatically start. I then move on to the other tabs such as scheduled tasks.
Another area of interest is Windows Services. I look through my services list and Disable or set to manual everything I can. https://www.howtogeek.com/139028/which-windows-services-can-you-safely-disable/ is one place to Start. Do NOT take their advice blindly. Find other sites like http://www.blackviper.com/service-configurations/black-vipers-windows-10-service-configurations/ and Google the Service in question. I see Print Spooler in my services. That's self-explanatory. If I don't have a printer I can disable that service.
What exactly isn't performing as well as before?
It's easy to start anew. What happens a year or three from now if it slows down again? Get to KNOW Windows.
Personally I would only reformat the C: drive.