Just scan your pc using eScan AntiVirus and Toolkit Utility", from the below link.
Boot the pc in Safe Mode.
Run the toolkit (mwav.exe), and then select the below option to start the scan.
"Memory / Services", "Registry", "Startup Folders", "System Folders", "Scan
Spyware", "Drive", "All Local Drives" , "Scan All files" and "Scan & Clean".
Do restart the pc and let me have your feedback.
And if the problem doesn't resolves. then search for MWAV.LOG file and paste the content of that log here.