Actually from the Hardware ID: ACPI\PNPA000, it appears that this unknown device is not part of an Intel Driver like from the chipset driver etc.
Usually, if it was part of the Intel Chipset Driver, the hardware id would have been listed as something like:
HardwareID = PCI\VEN_8086&DEV_XXXX. So I am pretty sure that it has nothing to do with Intel Drivers. To be honest,
I have nearly all the Hardware ID for the Intel Products, but since this is an OEM laptop, I cannot guarantee anyything to you.
The ACPI driver mostly used to be embedded in the Microsoft OS itself. (Plug and Play)
For example: AC Adapter, ACPI-Compliant Control Method Battery, Standard PS/2 Keyboard, ACPI fan, ACPI Lid, DMA Controller etc. All these are embedded in the OS.
So my question is:
Did it occur after installing the SP3?
The best thing to do is to try to re-install a clean OS SP2 and all the latest drivers in the following order.
Installation order for Windows XP
toshiba accesibility V184.108.40.206C
acoustic silencer V1.00.005A
atheros client utility V220.127.116.11.I123
toshiba bay service utility V18.104.22.1685C
microsoft bluetooth monitor V2.0
toshiba bluetooth stack V3.01.03
cardbus driver + cardreader V22.214.171.124
intel chipset driver (intel ich6m) 126.96.36.1998(LOGO)
toshiba controls components V188.8.131.52C
vga driver (nvidia nv43, nv44m) V71.10
dual pointing device driver V184.108.40.206C
dual pointing device utility V220.127.116.11
intervideo windvd 5.0B11.475-AN1217
h/w setup V18.104.22.168C
toshiba hokey utility V22.214.171.124
smc fir driver V5.1.3600.5_R101(LOGO)
toshiba management console V3.5.4
hotfix for "cumulative security update for ie" Q834707
hotfix for "cannot use infrared port to transfer data" Q885855
hardware (dep)-enabled computer may unexpectedly quit after you resume from standby or from hibernation in windows
xp service pack 2 Q889673
mobile extensions V3.69.00.XP.C
toshiba software modem SM21476ALD06
marvell lan driver (10/100/1000 88e8036 lan) V126.96.36.199(LOGO)
supervisor password utility V188.8.131.52
pc diagnostic tool V3.0.9
power saver V7.03.05.C
power saver driver V184.108.40.206C
record now V7.22 BUILD720B37Q
sd memory card format V220.127.116.11A
sd secure module V1.0.2
realtek audio driver V5.10.00.5740
sun java 2 runtime environment V1.5.0
alps touch pad driver V6.0.305.5(LOGO)
touchpad on/off utility V18.104.22.168
atheros ar5001x mini pci wireless network adapter V22.214.171.124
intel wireless lan b/g driver V126.96.36.199
zooming utility V188.8.131.52C
toshiba zooming hook V184.108.40.206C
If you dont want to re-install the OS, try the latest drivers on the already installed OS.
Thanks for your swift reply. I visited the link sugessted by you. Unfortunately, I couldn't find the required driver there. You are right, I want to install the driver without reinstalling the OS due to some limitations. Anyways I appriciate your detailed reply and assisting me to your capabilities. As I wrote earlier, I am in contact with Toshiba India too. See what happens.
Thanks & regards once again.