MTNL 3G JADOO TERACOM DONGLE - SOUND PROBLEM

          The Teracom USB stick LW272  has some bug because of which in some laptops the sound is muted i.e. the laptop speakers or even the headphones don't play the sound even in full volume while the stick is on. 

The bug is the USB driver of the stick books itself as a USB Audio Device which it is actually not. And so all the sound signals goes to the USB stick. To solve this, do the following steps:

1. Go to Start->Devices and Printers.

2. Right click on HSPAData Card and click on Sound Settings

3. In Sound Settings, you will notice the Speakers with USB Audio Device as default playback device.

So, click on Speakers with High Definition Device(or your system's speaker) and then click on Set As Default and then click OK.

So, the problem should be fixed and you can play the audio normally.

How-to verify sha1 or md5 hash sums of large files

If you download large files from internet, say about more than 1GB, there is a possibility of the file data being corrupted. Sites or servers which offers such large file downloads mostly give a md5 or sha1 hash sum on the download page so that you can verify the file after it is downloaded.
 Windows has a provided a nice tool for this, called FCIV. You can directly download the tool from here.
Before starting with this how-to, please check that you have the file to be verified and its expected sha1 or md5 hash sum with you.
Run the tool. It ll ask you to provide a location to extract. For now, extract the file on desktop. Now, go to cmd.
 Start -> Run -> Type cmd and hit enter.
 Now type cd Desktop and hit enter.
Type fciv.exe and DONT hit enter...drag the file which has to be verified to the cmd window. This will give you the path to the file.
Now if you want the md5 sum, type -md5 or else -sha1 after the file path and hit enter.

fciv.exe

It ll take some time to calculate the sum. After it outputs the sum, verify it with the one on the site. If the sums don't match, the file is corrupted else its fine.

How to turn on or off IIS on Windows Vista or Windows 7

IIS (Internet Information Services) is a web server application created by Microsoft. In most of the computers, the IIS feature is off by default. To turn on IIS, go through the following steps....


1. Goto Start -> Control Panel -> Programs

2. Programs -> Under Programs and Features, click on Turn Windows features on or off




3. Now in Windows Features, check on all the options under Internet Information Services and Internet Information Services Hostable Web Core, and then press OK. Now it will take some time turning the feature on.  



4. Now restart your computer.


5. Open your web browser, type in the address bar
       http://localhost/

    If you see the following snapshot, then your IIS is configured properly.

Start or Stop IIS

Click Start button, type in the search box "IIS".
The first result you will see would be probably of IIS Manager. Click on it. 




You will see the above window. On the right pane, under Manage Server you will see options to start, restart and stop the IIS.


If you have any problem configuring IIS, feel free to put it under comments.