I have an HP 8555C with an HP 8000+ series CDwriter Plus, and a Multimedia Audio Controller, PCI Input Device, and PCI Simple Communications controller. None of these work. I've tried searching for new drivers to no avail. Another problem I'm having is that Adaptec Software 3.5 loaded on here won't find the rom either, and when trying to update the Adaptec software to 4.0 (downloaded from their site), it says no valid copy found. I'm having problems on other machines as well with the COM ports. This 8555C HP loads Com1 and Com2, but Com2 has a problem (driver I believe can't check resopurces if device not functioning in w2k). The other two machines load only Com1, and when you try to add another port, it can't find drivers. Why is it that Com1 drivers won't work on other Com ports? These may be dumb questions, but I need my CDRW. Help if you can?