First of all, this is an older computer which my daughter is presently using, running Windows 98. It just had installed a 20 gig hard drive as a separate drive. First hard drive of 3 gig still in place. ES1868 Plug & Play driver not working I guess and indicates no available IRQ. 2 CD drives and one floppy installed. Printer on LPT1. Processor is AMD k6 - 96 ram. I am not sure that when the guy installed the additional hard drive somehow the IRQs have been all utilized. I have several things to do on this computer- first the sound, then speeding it up and possibly getting a USB adapter (for i-Pod and camera uploading) if my motherboard and controllers can allow it. I know some stuff...but this is starting to get too deep. Have the Windows 98 disc which was supplied when I had originally put the 3 gig in. Have other driver CD's and have thought of re-installing Windows 98 or even better reformatting but that one makes me nervous if I have everything I need to do that. Like I said...it's an oldie-Christmas may mean a new one but for now we're trying to get it as best we can. Anyone that can help resolve ALL of these problems should get LOTS of points!!!