From past two days I was having this weird problem where my Windows freezes and does not do any thing. Sometimes it freezes up with a continuous beep, other times it just freezes and I have to force windows to shut down.
After doing a bit of investigation online I found out that many people were having the same problem and it’s because of MBR (Master Boot Record) Root-kit that got installed when I visited a infected website. Supposedly these root-kits are new kind of malware that gets installed and replaces the infected computers master boot record. Even though I had McAfee anti-virus installed on my machine it failed to detect the infection. After doing bit more search I found couple of tools that detect these kinds of root-kits and deletes them.
F-Secure Blacklight Rootkit Scanner
I downloaded Prevx scanner and scanned my machine, It found a root-kit installed on my machine and was able to delete it successfully.