what could be the issue here?
I recently format it

what OS ?

If windows 10 - type services in start, look for superfetch service and stop it permanently. Do the same for Windows Search service

usually stopping those fixes disk usage

yes its windows 10, I have done those both now and its still 100%
both are disabled and not running

This post was edited by twiiztedacer on Jan 18 2018 06:09am

well on a fresh install chances are windows is doing updates.
But theres many reasons for it and guides all over the Internet.

Probably 5400 rpm drive.
Probably too many background services - disable them all in task manager and reboot (except ms ones)

in addition to that there is 32mb cache memory, and 64mb, @ 5400 RPM, and there is a 7200 RPM version...
Most people just Buy a 120$ SSD , which Doesn't do RPMS... so i can't compare speeds... but
300-500MB cache ... is like 10x as fast... Loads programs/games/web browsers up like instantly...

A school computer... 5-7 minutes to open adobe products...
Cheap 300$ laptop + 120$ ssd.... = 30 sec to open adobe products.