cd rom dvd units disappear from xp without prompting

[Richard]

these are copies of error message from system service
report. what happens is that during cd rom unit use the
cdrom and dvd units "disappear" from existance according
to windows.

erEvent Type: Error
Event Source: PlugPlayManager
Event Category: None
Event ID: 12
Date: 6/24/2004
Time: 4:54:27 PM
User: N/A
Computer: CELTIAN
Description:
The device 'PHILIPS CDD4851 CD-R/RW'
(IDE\CdRomPHILIPS_CDD4851_CD-
R/RW_________________C3.7____\5635334f343144303058343038382
020_0_0_0_0) disappeared from the system without first
being prepared for removal.

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 00 00 00 00 ....
ror messages as follows:


second message:

The device 'SAMSUNG DVD-ROM SD-616F' (IDE\CdRomSAMSUNG_DVD-
ROM_SD-616F_________________F100____\5&84a87b8&0&0.1.0)
disappeared from the system without first being prepared
for removal.

any ideas and or help much appreciated. can contact
directly through personal e-mail
(e-mail address removed)

Thanks

 

[Rich Barry]

Richard, check here
http://support.microsoft.com/default.aspx?scid=kb;;Q314060