hi mate
when we install a new peice of hardware windows will assign what is known as a i.r.q or interrupt request,however while most of the time windows will assign individual irq,s and in some cases assign shared irq,s there may also be a instance were two peices of hardware sharing a irq become a problem
this is commonly known as a IRQ conflict and is a once common hardware error, received when two devices were trying to use the same interrupt request (or IRQ) to signal an interrupt to the Programmable Interrupt Controller (PIC).
The PIC expects interrupt requests from only one device per line, thus more than one device sending IRQ signals along the same line will generally cause an IRQ conflict that can freeze a computer.
to check you soundcards irq right click my computer(computer in vista) and select properties,then click device manager and in windows vista agree to the uac
then go to the sound and multimedia entry and expand this to find the audidgy EAX then right click the entry and select properties
then go to the resources tab and scroll down the entrys until you see "irq",then next to this you will see the irq number
then heres were it gets interesting,you then have to discover if or whats conflicting with the soundcards irq
this job could be made easier by downloading diagnostic software such as "sisoft sandra lite" from http://www.sisoftware.co.uk/index.html?dir=&location=downandbuy&langx=en&a=,this will help you discover which other device is conflucting with your soundcard
however sometimes the best solution is to simply move the pci soundcard to another pci slot,this most of the time will actually sort the problem,and sometimes it may require any other cards being moved aswell
i personally use the top pci slot first,then if theres any issues move it to the bottom pci slot,theres no actuall science in this method but its worked for me time and time again
sisoft sandra can also diagnose any problems with the card
and finally soundcards should be recognized even before the drivers are installed however its allways best to download the latest from the creative website as these will have patches and fixes for different motherboards
you can download your audidgy drivers from http://support.creative.com/Products/product_list.aspx?catID=1&CatName=Sound+Blaster#
good luck mate !