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 V188.8.131.52C
acoustic silencer V1.00.005A
atheros client utility V184.108.40.206.I123
toshiba bay service utility V220.127.116.115C
microsoft bluetooth monitor V2.0
toshiba bluetooth stack V3.01.03
cardbus driver + cardreader V18.104.22.168
intel chipset driver (intel ich6m) 22.214.171.1248(LOGO)
toshiba controls components V126.96.36.199C
vga driver (nvidia nv43, nv44m) V71.10
dual pointing device driver V188.8.131.52C
dual pointing device utility V184.108.40.206
intervideo windvd 5.0B11.475-AN1217
h/w setup V220.127.116.11C
toshiba hokey utility V18.104.22.168
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) V22.214.171.124(LOGO)
supervisor password utility V126.96.36.199
pc diagnostic tool V3.0.9
power saver V7.03.05.C
power saver driver V188.8.131.52C
record now V7.22 BUILD720B37Q
sd memory card format V184.108.40.206A
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 V220.127.116.11
atheros ar5001x mini pci wireless network adapter V18.104.22.168
intel wireless lan b/g driver V22.214.171.124
zooming utility V126.96.36.199C
toshiba zooming hook V188.8.131.52C
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.