The first things that you can do is uninstall AVG and Advanced System Care Here is the removal tool for AVG.
Then please install Avast .
Then Run Checkdisk The Correct Way.
Start - All Programs - Accessories and right click on Command Prompt, select "Run as Administrator" to open a command prompt.Copy and paste the below into the command prompt window hitting ENTER After The Sfc /scannow Command.
IF SFC /Scannow finds any issues with your machine then please visit the windows update site.
Run CHKDSK /R In a command prompt window. Hit the start button then type cmd (Run As Admin)in the run box when the command prompt opens type or copy and paste the following. CHKDSK /R Reply Y when asked if you want this to happen on the next boot.Now Type Exit and Reboot your machine.