I give below the text from my Bootlog.txt.
One of the DLL or VXD file is missing.
Booting by step by step, it is not picked.
Windows try to load this somewhere at the
end of booting process.
I have tried quite a few time going through
step by step process but no success.
The bootlog entries before and after the
file NOT FOUND warning are all related to
the Modem file. Modem does not seem to
create any problem.
It is most the registry entry?
Is there anyway to search this unknown
file?
Any help would be highly appreciated.
Thanks.

[0012D51A] Starting MSP3880SP-W 56K Modem
(CXT\VEN_127A&DEV_2016&SUBSYS_4052122D\WDMMDM0)
[0012D51A] Dynamic load device
****************
[0012D51A] Dynamic load failed : [0012D51A] File not found
*****************
[0012D51A] Started MSP3880SP-W 56K Modem
(CXT\VEN_127A&DEV_2016&SUBSYS_4052122D\WDMMDM0)