I say this too..If you're all backed up I'd say it's a no-brainer. Just make sure you download drivers you need before you do it. I think that's about it. I'm sure someone will be along soon to tell me how wrong I am. But yes, basically, a clean sweep will make a big difference. And if you're not satisfied with the results, there's nothing to stop you getting a new one then. But I'd try the reload first.
mine slowed to a crawl last year.... the above advice worked for me... had it not, I'd have gone for the reinstall too, but didn't need to.virus scan, malwarebytes, CCleaner, chkdsk, defrag
virus scan, malwarebytes, CCleaner, chkdsk, defrag