Programs will not start

It seems pretty easy to disable on board sound. However, I think you didn't understand me. The soundcard that sometimes causes the BSOD is external, it connects to my PC via USB.

 

OK, I missed the part about USB. Here's the standard procedure for installing these type of cards.

Installing a USB Sound Card in Your Dell Laptop PC:

1) Check the system requirements to be sure that your Dell laptop has the right USB plug for your chosen sound card.

2) Turn the computer on.

3) Plug your sound card into the USB plug on your computer. The operating system will identify the new hardware and search for the drivers and software.

4) Insert the sound card manufacturer’s CD and install drivers if prompted to do so.

---------------------------------------------------------------------

Is your soundcard an OEM type, card only? Or is it Retail type, with box, printed installation instructions, etc?

How old is the Dell laptop? What model/series etc?

You said, the card is a Creative Sound Blaster (Extigy)???
http://www.soundblaster.com/products/

What other USB devices are you using at the same time your using the sound card? Such as, printer, keyboard, mouse, flash drive, etc.

How many USB jacks does this laptop have?

 

Done!
I reinstalled all the software that came with my soundcard. It is retail type, I bought it like six years ago. so my computer meets the necessary requirements. Yes, it is a Soundblaster Extigy.

My computer is a Dell Inspiron E1505/6400 and I bought it in August 2006. It has four USB ports and I usually plug in a mouse, the soundcard and sometimes a joystick.

 

Six years old! That's a dinosaur. No wonder your having driver compatibility issues, and can't find new drivers. My advice to you is to buy a new soundcard. To continue fooling around with that old card is a waste of good time. Besides, the technology has improved greatly in six years. Much better sound quality now-a-days. I run a new creative soundcard with a 400 watt Logitech speaker system. Really sounds great for a computer! Call Dell sales, see what they recommend for a compatible external soundcard. But, if your really into great sound on a PC, consider upgrading to a desktop media center. This is what I use.
Some last thoughts, uninstall all other third party USB devices, including their software. Make sure you reboot afterwards. Don't use any other USB device when using the USB soundcard. Now go ahead and try installing the soundcard and it's drivers.

Take care...

Here's your owner's manual.
http://support.euro.dell.com/support/edocs/systems/ins6400/en/om/MD402AO3.pdf