How very odd! I found the exact same post word for word (except laptop model) dated 4th July 2012 here

forum.notebookreview.com/.../675084-unregistered-exception-handler-gutted.html

Hi CHANDU02,

There seems to be an issue with the hardware on the system. I would suggest that you run the diagnostics on the computer by following the steps mentioned below and check if there is any issue with the hardware on your system.

1. Turn on or restart the computer.
2. Immediately at the Dell logo screen, starting tapping the key once a second until the One Time Boot menu appears (if the computer boots to Windows turn the computer off and try again).
3. At the One Time Boot menu, press the arrow key to highlight Diagnostics, PSA+ or Enter ePSA, then press to begin the hardware Diagnostics.
4. Write down any error codes listed. Reply to us with the error codes.

good services \

thanks  Mr . Ravi

After entering  Diagnostics its still sowing same massage  'UNREGISTERED EXCEPTION HANDLER'

Order of Things to try:
(Never remove hardware without powering down safely and removing the battery)

1. Disconnect all devices and try again.
2. Remove one stick of memory at a time and try again.
3. Remove the hard drive and try other bootable media Like Live Linux DVD.

If all fails, you may be experiencing an issue with the motherboard and you will have to get it replaced.

Take the hard drive out  or F12 BOOT a live linux dvd.

Then what happens?

Get A Linux Magazine Like the one below and boot Live with the hard drive removed or via F12.

System is old enough to have a bad drive.  I got this magazine with 2 DVD's in it at Microcenter.

T

The latest edition of Linux Identity Starter, the edition dedicated to the latest version of the world's most popular free and Open Source operating system: Ubuntu 12.10 Quantal Quetzal, that comes with numerous new features.

The Ubuntu project focuses a lot on simplicity and ease of use. Thus, it is starting point for most newbies, even those who are using Linux for the first time. Veteran users, on the other hand, can try out the new features in this exciting version. The articles in this magazine issue will equip you with the knowledge on how to use Ubuntu's rudder and compass and the installable version on the accompagnying DVDs will allow you to sail ship in no time at all.

The DVDs coming with this isse contain each other: DVD10 (double face) – full, official version of Ubuntu 12.10 for both 32 and 64-bit systems and DVD5 – multiboot, 32-bit versions of: Kubuntu, Lubuntu, Xubuntu and Ubuntu Studio 12.10.

Thanks. After doing this it still showing same error.