Look into updating your chipset drivers
to latest possible.
Open an elevated command prompt and copy/paste this, hit enter: chkdsk /r C:
Run that for each partition on the system, changing C to match the letter.
You could try to install TeraCopy. It may do something better for you.
If you have AVG uninstall that from the system and do not just disable. Uninstall any other antivirus you may have, as a test if needed.