How do i detect the presence of a virus in my laptop and remove it completly without any other antivirus softwares like avast,

PC

You cannot which is why you need a malware app.  There are free ones (like Malwarebytes)

I would strongly recommend making sure you have Microsoft security essentials installed and installing malware bytes on your machine. malware bytes is completely free, you do not need the paid version to detect the malware on your machine.

Run a full scan with malware bytes and this will pick up the majority of it.

Let me know how it goes and feel free to ask any more questions.

I would strongly recommend making sure you have Microsoft security essentials installed and installing malware bytes on your machine. malware bytes is completely free, you do not need the paid version to detect the malware on your machine.

Run a full scan with malware bytes and this will pick up the majority of it.

Let me know how it goes and feel free to ask any more questions.

• Proposed as answer by MS Sihle 42 minutes ago

I would strongly recommend making sure you have Microsoft security essentials installed and installing malware bytes on your machine. malware bytes is completely free, you do not need the paid version to detect the malware on your machine.

Run a full scan with malware bytes and this will pick up the majority of it.

Let me know how it goes and feel free to ask any more questions.

• Proposed as answer by MS Sihle Monday, February 16, 2015 11:01 AM

Hi prudhvi,

You may have interests reading the article below:

From the author: Enhance the security of Windows 8.1 devices, using only built-in tools

You may take use of Windows Defender, This software helps identify and remove viruses, spyware, and other malicious software, which is the built-in software in Windows 8.1.

More inforamtion on Windows Defender, please check: Using Windows Defender.

You may also consider other software as provided by others here.

Best regards