Hi,
- Which security software\ antivirus are you using?
Follow these methods and check if it helps:
Method 1: I would suggest you to scan your computer with Microsoft Safety Scanner, which would help us to get rid of viruses, spyware, and other malicious software. The Microsoft Safety Scanner is a free downloadable security
tool that provides on-demand scanning and helps remove viruses, spyware, and other malicious software. It works with your existing antivirus software.
**http://www.microsoft.com/security/scanner/en-us/default.aspx**
Also refer to this link: **http://windows.microsoft.com/en-us/windows-8/how-find-remove-virus**
Note: The Microsoft Safety Scanner expires 10 days after being downloaded. To rerun a scan with the latest anti-malware definitions, download and run the Microsoft Safety Scanner again.
Disclaimer: Any data files that are infected may only be cleaned by deleting the file entirely, which means there is a potential for data loss.
Method 2: Confirm that your hard disk or your file system is not damaged.
a) Go to Start Page.
b) Type: CMD
c) The Apps page will come up.
d) Right click command prompt
e) Click “Run as Administrator” on the bottom pane.
f) If you get the User Account Control prompt. Click Yes to continue.
g) At the Command Prompt, type Chkdsk /r /f
Important: While performing scanning on the hard drive if any bad sectors are found on the hard drive when scanning tries to repair that sector if any data available on that might be lost.
Hope this helps.