Matlab - No consigo iniciar Matlab

Hola! he instalado matlab pero al intentar ejecutarlo me sale:

License Manager Error -9
MATLAB is not licensed on this host.
This error may be caused by a hard-drive modification. Please reinstall MATLAB.

For more information, see The MathWorks Support page at
http://www.mathworks.com/support and search for "license manager error -9"

Lo he reinstalado y he probado con otras soluciones q he encontrado en este foro pero ninguna funciona. Si alguien me pudiese ayudar se lo agradeceria muchisimo!!!

Que version de matlab estas instalando y sobre version de sistema operativo, en algunos casos tienes que descargar un parches desde la web de MathWorks.

Pues estoy intentando instalar Matlab 6.5 en Windows XP.

Estimado Nicte

En la pagina de Mathworks se encuentra reportado este tipo de error, a continuación el reporte y solución

web page: http://www.mathworks.com/support/solutions/data/1-25OFPP.html?solution=1-25OFPP

Technical Solutions
After activating my MATLAB Student Version, why do I receive a License Manager Error -9?

Date Last Modified: 21 May 2007 Solution ID: 1-25OFPP
Product: MATLAB®
Reported in Release: R14SP3 SV
Fixed in Release:
Platform: Windows
Operating System: Windows Any


Subject:
After activating my MATLAB Student Version, why do I receive a License Manager Error -9?

Problem Description:
My MATLAB student version is installed on my laptop using a wireless network card I get the following error message if my wireless network card is disabled:
License checkout failed. Invalid host. License Manager Error -9
or I activated with a network adapter that has become inactive because of power saving technology and I now receive:
License checkout failed. Invalid host. License Manager Error -9

Solution:
This problem can occur when the Student Version is installed on a machine with a wireless network card and the network card becomes disabled. To work around this problem, you can enable your wireless network card, so that MATLAB can see it. To fix this issue you can instead assign MATLAB to use your hard drive Volume Serial Number instead of the wireless network card. To do so:

1. Obtain your Volume Serial Number by running the following command from the C:\ drive of your command prompt on Windows:


vol

2. Log in to the main account page of your MathWorks Account at the MathWorks web site:

http://www.mathworks.com/accesslogin/login.do

3. Click on the ‘Activate Another Machine’ link. If this link is not available, then contact The MathWorks.

4. Following the instructions on the “Activate My Student Version Software” page to activate your software. In the ‘Machine ID’ field you will need to enter the following:

DISK_SERIAL_NUM=<volume serial number>

where <volume serial number> is the Volume Serial Number you obtained from the ‘vol’ command. NOTE: when entering the volume serial number remove any dashes.

5. Follow the instructions on the Student Version License File page to update your existing license.dat file.

If you are still unable to activate your software, contact The MathWorks. Contact information is available at:

http://www.mathworks.com/support/contact_us/index.html