|Try to scan with a good antivirus like Kaspersky, Bit Defender or NOD|
Among the free ones try AVAST or AVG.
Other than that try using Disk Clean up
1.) Ricght Click C: >> Properties >> Disk Clean up.
2.) Delete Temp files: Start >> Run >> %temp% <enter> try to delete as many files as u can.
However I recommend you to use CCLEANER to delete those files, it will fix most of your problems.
3.) Try deleting Desktop.ini and folder.htt files
Post back if the problem persists.