Hi Vince, thank you very much. I did try to run updates for this network card but Windows told me I have the latest driver already and even went to HP support site to look for a newer driver but didn't find one. The link you provided was very helpful. We downloaded the driver for Windows 7 and now it passes the FIFO test. I'm very grateful for your help and time in responding to my query.
P.S. Seems I can't reply to the original discussion for some reason