In win XP, you can't use Ndivia Video Card, because it don't have a proper driver for win XP.
You you should disable this video card in Device manager.
- Try to install latest driver for your Intel onboard card.
- Try to change screen resolution to a smaller resolution.
If above steps still don't help
The system shuts down unexpectedly during normal usage.
This tip is for the following regions: North America, South America, Central America, Western Europe, ASEAN adn RUCIS
All U460 models configured with discrete graphics that were manufactured between 1st June 2010 and 15th August 2010.
(U460S is not affected)
There is a defect that affects a small percentage of the heat-sinks used on the U460 that causes the graphics processor to overheat, causing the system to shutdown.
Any customer who experiences repeated unexpected shut downs should call the support number listed in their user guide. This can also be found at:
Lenovo will arrange for the system to be sent to the depot to have it reworked.