Laptop gets very slow while copying/moving files

My laptop used to work great in every aspect on windows 10 days ago .... 2 days ago i installed linux mint to give it a try and formatted the hard disk, but i couldn't acclimate to linux os.

so i downloaded W10 iso and did a fresh install...but i discovered that my laptop becomes quite slow while transferring files! i can't even access settings or open browser while the transferring process!

any help please!