Hello! We had a similar experience when our company put together new machines for web design use. I believe the problem was between the OS (NT 4 w/SP5 and the scsi controller. Check your OS (which is...?)and make sure that it has the appropriate drivers for the card. HTH Will Stephenson ><> [log in to unmask] -----Original Message----- From: PCBUILD - Personal Computer Hardware discussion List [mailto:[log in to unmask]]On Behalf Of Shawn M. Shea Sent: Monday, August 30, 1999 1:39 AM To: [log in to unmask] Subject: [PCBUILD] adaptec host adapter I have an Adaptec 1542b host adapter that I had running fine on a PI133 with 5 devices (2 scsi cd-rom, 1 drive (I boot from an ide drive), a zip drive and a scanner). I have upgraded to a PII400 and now I cannot get the card to work at all. It is terminated properly. I have tried just using internal and just using external devices and it absolutely will not work. I have gotten the error cannot find id#0 lun#0 on bootup sometimes but that is it. It shows up as a conflict in device manager but there isn't one. I have the latest drivers, etc. Does anyone have any ideas, I am unable to use half of my machine because of it. Thanks. Shawn M. Shea Microsoft Certified Professional E-mail - [log in to unmask] The PCBUILD web site always needs good submissions. If you would like to contribute to the website, send any hardware tech tips or hardware reviews to: [log in to unmask] The PCBUILD web site always needs good submissions. If you would like to contribute to the website, send any hardware tech tips or hardware reviews to: [log in to unmask]