if you tried software resetting then you should go for hard reset but remember it will swipe all of your internal data as well as installed apps, contacts, msgs, etc
step 1 At first hold down the Power key in order to switch off the cell phone.

step 2 In this step press and hold the Volume Down + Power button for a few seconds.

You should release held keys when the Recovery Mode starts.

step 3 Afterwards press Volume Down a few times to highlight "wipe data/factory reset", and then push the Power button to confirm this option.Factory Reset

Next,

select "Yes--delete all user data". Use Volume buttons to scroll and Power rocker to select.

after that it will erase all of your data as well as your passwords to the phone you forgot

When the Recovery Menu appears once more on the screen, choose "reboot system now".
Success! The hard reset has just been performed.


WARNING !
Hard Reset will erase all of your data

simply download the software called io bit driver booster it will scan all of your outdated or non installed drivers and will automatically install them to your pc that's the simplest solution i'll give you the link to the software
its
https://www.google.com.pk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0ahUKEwjZgsSnmNzOAhXFP48KHeMHA6wQFggfMAE&url=http%3A%2F%2Fdownload.cnet.com%2FDriver-Booster-3%2F3000-18513_4-75992725.html&usg=AFQjCNGVZ_YJbUEMo8s9gh_T18LcfSmkWA&bvm=bv.130731782,d.c2I

or you can try this

http://filehippo.com/download_driver-booster-free/