How to change the extension of any file in Windows

For some purposes we need to change or sometimes remove the extensions of files. All the files have some extensions. The extensions are last 3-4letters of files which helps the operating system to determine the application for opening that particular file.
For example, all notepad files have ".txt" extensions and open with Notepad, PDF files have ".pdf" extension and opens with Adobe Reader, power point presentations have ".ppt" etc.

Windows 8 Versions Comparison

Microsoft declared that windows 8 will be available in 3 Versions. Below is the comparison chart between the 3 proposed versions of Windows 8 OS.

Google About To Launch Its Cloud Storage- Google Drive Soon

The news in now confirmed that Google is soon going to launch its cloud storage platform with a 5 GB of free storage for its users.

It will be launched for MAC, Windows, Android and iOS possibly next week.

One more MAC Trojan detected, more critical than the previous one

Within the same month, one more MAC trojan has infected severals of MAC systems. The previous one Flash has already captured more than 650,000 MACs, the new one as informed by the security company Kaspersky Lab is "SabPub", its a backdoor for OSX and technically named "Backdoor.OSX.SabPub.a".

How to create a THIEF PENDRIVE

Pen drives can also be used to copy some data from computers without any need of manual actions or clicks to be made.
Negatively it may be used to steal some data from someones computer from a specific location or a drive, but for ethical needs, a man can use this trick to create a pendrive that can act as a synchronisation medium for sharing some information from a computer to another automatically just by inserting the pendrive, and removing it after waiting for a few moments, example for sharing a project's files with your friend who is working with you on the same.

Antivirus For windows 8

As windows 8 is not build fully, many of antivirus and security softwares do not work with windows 8, some may not install saying compatibility issue like comodo firewall and some may not get their updates, like Avira.

Avira Antivirus Not supporting Windows 8, Updates Don't Work

Windows 8 Previews .net 3.5 problem

In both the previews of windows 8, the developer and the consumer one, for home users, there is a big problem giving warning at startup and installation of several softwares. Before some apps start, a window opens warning that .net3.5 must be installed to run this software properly, and after proceeding with the installation, if fails in all cases.
Below is the sample screenshot.

How To sign in multiple google or gmail accounts in a single browser