DELL vostro 1550 audio driver problem

In the screen shot it says "Generic usb audio". Do you have a usb audio device connected to a usb port?

As far as a driver for the IDT internal audio system, as you know Dell does not support XP on the Vostro 1550, so there is not an IDT driver available for your system. Normally Windows would be able to install its own native HD audio driver but XP came out before HD audio did so there is no native HD driver in XP like there is in Vista and 7.

You could try installing random IDT XP drivers. If you get one to work please let us know which one. Be sure to have Service Pack 3 before trying to install HD drivers.

IDT 6.10.0.6341 for Vostro 3350 & 3550 (these have the same audio hardware as your Vostro 1550 so this one might work)

http://www.dell.com/support/drivers/us/en/04/DriverDetails/DriverFileFormats/Product/vostro-3350?DriverId=R315254&FileId=2731121566&urlProductCode=False

IDT 1.0.6402.0  for Precision laptops

IDT 5.10.0.6162  for Studio 1555

http://www.dell.com/support/drivers/us/en/04/DriverDetails/DriverFileFormats?DriverId=DHYJ2&c=us&l=en&cs=04&s=bsd

IDT 5.10.0.6147 for Vostro 1320, 1520, 1720:

http://www.dell.com/support/drivers/us/en/04/DriverDetails/DriverFileFormats?DriverId=64MNX&c=us&l=en&cs=04&s=bsd

IDT 5.10.0.6277 for Vostro 3300 3400 3500 3700

http://www.dell.com/support/drivers/us/en/04/DriverDetails/DriverFileFormats?DriverId=WW5CT&c=us&l=en&cs=04&s=bsd

IDT 5.10.0.6296  for Vostro V130

http://www.dell.com/support/drivers/us/en/04/DriverDetails/DriverFileFormats?DriverId=F911P&c=us&l=en&cs=04&s=bsd

Another idea is to let Windows go on the net and search for a driver. Your audio hardware is IDT 92HD87B1.

Hello sir," This is the conversation between Dell executive (supervisor) and the poor customer who purchased Dell Vostro" 

hello sir 

Dell Man :what is the problem

Poor Customer: i have purchsed Dell Vostro 1550,Am facing a issue with the speakers,the speakers output is very low

Dell man : sir Dell vostro will not support for multimedia it is not designed in that way for watching movies of listening music it is not designed

Poor customer :what is the solution for the problem

Dell Man :two options sir

1) Buy external speakers

2) Buy another laptop for multimedia purpose 

The moral of the story is do not buy Dell vostro model laptops