A: You can either reboot your computer in Safe mode to delete that file or, if you want something more simple, get Unlocker. It’s a free utility that will let you close all the processes that have possibly locked the file and once they are closed, you can then safely delete the file.

Q2. I am trying to play a video file on my computer but the media player says that I am missing certain codecs.

A: You can use a tool like Video Inspector to determine which audio and video codecs are required to play the video file on your computer. Alternatively, you can download a codec package like the K-Lite Pack that will let you play virtually any audio and video format on your computer.

Q3. I am running out of disk space on my Windows computer. How can I remove all the unnecessary files from the computer and recover some disk space?

A: There are three things you can do here:

Open the Run box and type “cleanmgr” to open the built-in Disk Cleanup utility. It will remove all the temp files and the unnecessary system files that you no longer need.
Use WinDirStat to determine where all your disk space has gone. Sometimes files are hidden in sub-directories that you can safely move to other drives or even delete them permanently (more options).
Use Duplicate Cleaner to identify and delete all the duplicate files on your hard drives. You can move the duplicates to the recycle bin or, if you want to play safe, to any another folder from where they can be easily recovered.
Q4. My computer takes lot of time to boot-up. I checked the “start-up” folder in the Windows start menu and there aren’t any applications out there.

A: Type “msconfig” in the Run box to open the “System Configuration” tool and then switch to the “Start-up” tab. Disable all the programs that you don’t need to run during start-up. If you are a power user, you may also switch to the “Services” tab and disable all the unnecessary services.

Autoruns is another excellent utility that shows you what programs are configured to run during system bootup or login.

Q5. I am trying to uninstall a program from my computer but the standard add-remove programs is not letting me through.

A: You can use the free Revo Uninstaller utility to remove every single trace of any program from your computer. Revo can also remove entries from the Windows Registry that may have been left by previous un-installation routines.

Q6. My Windows crashed with a “Blue Screen.” Why?

A: You really need to get in touch with a geek to debug the cryptic Blue Screen errors (aka “Blue Screen of Death”) but if you are lucky, a free utility called BlueScreenView can provide vital clues. Blue Screen View will scan the Windows dump files to determine the device drivers that possibly caused the crash.

Q7. It takes ages to copy files in Windows from one folder to another. The situation is marginally better in Windows 7 (over Vista) but still, is there a way to copy files faster?

A: You can use an external file copying utility like TeraCopy or even RichCopy – they’ll not only copy /move files across drives faster but you can also resume broken file transfers (similiar to FTP operations).

Q8. I think I deleted a file by mistake. Can I recover it?

A: Recuva is a free software that will scan your hard drives, USB stick and other external drives for any deleted files that it can possibly recover. It may not work in all cases especially when you securely deleted a file.

Q9. Every time I copy something new to the Windows clipboard, the previous content gets erased. Can I make it permanent?

A: You can use Ditto, a free utility that sort-of adds memory to your Windows Clipboard. You can copy anything to the clipboard and it will stay there as long as you want.

Q10. How do I protect files and folders on my computer?

A: While there are free tools like Hide Folder that let you easily protect files and folders with a password, use TrueCrypt if you want a more secure solution. The obvious downside with a program like TrueCrypt is that if you forget the password, it is nearly impossible to retrieve the protected files.

2. Now type ‘list volume’.

This command will list out all the drives of your computer with their label,size letter etc

3.Now lets say you want to hide volume 2 then you should type ‘Select volume 2′ i.e select volume ‘drive number’.

this command will select the volume you want to hide,remember the drive not hidden till yet.

4.Now lets say for e.g for hiding the volume 2,you have to type this command ‘Remove letter D’ the letter D is the letter assigned to volume 2,the letter assigned are different for different volumes.

Note-Your drive is hidden now it may take a restart to be in effect.The drive can be retrieve back easily just by following step 1 to 3 and instead of step 4 follow step 5.

5.To unhide your drive follow step 1 to 3 and then step 5..just type ‘assign letter D’,here letter D is just an example.

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So what is a proxy Server.

Proxy Server is a server that acts as a path between the server and a client. A client connects to the proxy server, requesting some service, such as a file, connection, web page, or other resource, available from a different server.

A proxy server has two main  purposes:

• To keep machines behind it anonymous.
• To speed up access to a resource (via caching). It is commonly used to cache web pages from a web server.

Proxy server can be placed anywhere in between the user local computer and the destination internet.

For connecting system to the internet via proxy server we need to modify setting in the web browser .

Here I am using firefox for this configuration . For other browsers the step may vary slightly but after reading this article it will be easily set .

In the Menu option at the top go to Tools->Options

then go to advanced section

Then go to network tab and add the proxy server’s address in the manual pxoxy settings.

you can add settings for ftp ,http,ssl in the section.

Now enjoy the proxy server settings and be secure on your way to internet browsing.