CANT FIND MY SERVICE TAG NUMBER FOR MY DELL DIMENSION 1100 DESKTOP PC

Try installing the latest audio driver.
You can download the audio and device drivers from Dell WEB site, the support download page. Make sure you select your model desktop or laptop, better still, type in the Service Tag number, it is printed on the label on the bottom of the laptop and on the back or sides of a desktop. (If the Service Tag label is missing then go into the BIOS setting and on one of the BIOS pages, the Service Tag number will be displayed). This will open the page where the specific drivers for your model computer are located. Also make sure you select the Windows of the drivers for your Windows operating system. Click on this link to download the drivers: - http://support.dell.com/support/downloads/index.aspx?c=us&l=en&s=gen

You can download the modem and device drivers from Dell WEB site,the support download page. Make sure you select your model desktop or laptop,better still, type in the Service Tag number, it is printed on the label on thebottom of the laptop and on the back or sides of a desktop. (If the Service Taglabel is missing then go into the BIOS setting and on one of the BIOS pages,the Service Tag number will be displayed). This will open the page where thespecific drivers for your model computer are located. Also make sure you selectthe Windows of the drivers for your Windows operating system. Click on thislink to download the drivers: - http://support.dell.com/support/downloads/index.aspx?c=us&l=en&s=gen

Go to th below website, then type in your service tag number. It will show the list of drivers for for different devices, select network and then download the file.

http://www.dell.com/support/troubleshooting/us/en/555/ProductSelector

Thanks

You can download the audio and device drivers from Dell WEB site,the support download page. Make sure you select your model desktop or laptop,better still, type in the Service Tag number, it is printed on the label on thebottom of the laptop and on the back or sides of a desktop. (If the Service Taglabel is missing then go into the BIOS setting and on one of the BIOS pages,the Service Tag number will be displayed). This will open the page where thespecific drivers for your model computer are located. Also make sure you selectthe Windows of the drivers for your Windows operating system. Click on thislink to download the drivers: - http://support.dell.com/support/downloads/index.aspx?c=us&l=en&s=gen

You can download the LAN and device drivers from Dell WEB site,the support download page. Make sure you select your model desktop or laptop,better still, type in the Service Tag number, it is printed on the label on thebottom of the laptop and on the back or sides of a desktop. (If the Service Taglabel is missing then go into the BIOS setting and on one of the BIOS pages,the Service Tag number will be displayed). This will open the page where thespecific drivers for your model computer are located. Also make sure you selectthe Windows of the drivers for your Windows operating system. Click on thislink to download the drivers: - http://support.dell.com/support/downloads/index.aspx?c=us&l=en&s=gen

You can download the LAN and device drivers from Dell WEB site,the support download page. Make sure you select your model desktop or laptop,better still, type in the Service Tag number, it is printed on the label on thebottom of the laptop and on the back or sides of a desktop. (If the Service Taglabel is missing then go into the BIOS setting and on one of the BIOS pages,the Service Tag number will be displayed). This will open the page where thespecific drivers for your model computer are located. Also make sure you selectthe Windows of the drivers for your Windows operating system. Click on thislink to download the drivers: - http://support.dell.com/support/downloads/index.aspx?c=us&l=en&s=gen

You can download the drivers from Dell WEB site, thesupport download page. Make sure you select your model desktop or laptop,better still, type in the Service Tag number, it is printed on the label on thebottom of the laptop and on the back or sides of a desktop. (If the Service Taglabel is missing then go into the BIOS setting and on one of the BIOS pages,the Service Tag number will be displayed). This will open the page where thespecific drivers for your model computer are located. Also make sure you selectthe Windows XP or Vista version of the drivers for your Windows operatingsystem. Click on this link to download the drivers: - http://support.dell.com/support/downloads/index.aspx?c=us&l=en&s=gen

It's hard to say without your service tag to know what motherboard they installed, what type of ram you're using, etc.
You can access a lot of automated info by entering the service tag at Dell's site, available by clicking here
But you're going to be limited, at best, expecially by today's standards.
You might be better off getting a new system and installing your hard drive as a slave, if you're attached to some of what's installed there. You'd still have to have access to installation files for all your applications, though.

Ok, since it's a Dell, then it's pretty easy to get the driver.

1. go to Dell's support website: http://support.dell.com
2. Click "Drivers and Downloads"
3. Choose "By Service Tag"
4. Enter your service tag and click GO
5. Scroll down to "Network"
6. Download the "Recommended" driver and install.
7. Follow the installation directions from there.

maybe your dell dimension needs an audio driver. you can find drivers here by inputing the model or the service tag number. service tag found at the back of your PC.

http://support.dell.com/support/downloads/index.aspx?c=us&cs=19&l=en&s=dhs&~ck=mn&SvcTag=&SysID=DJ_DIGITAL_MP

Just follow instruction if your were in the site.

if this not solve;
try another audio card.