Laptop is not booting up (HP Pavilion dv6t-2000)

When i start my PC (HP Pavilion dv6t-2000, Win 7 Home Premium) it showed the message that there is some hardware-software failure and shown the error with error code as 0xc0000225..

Now it shows an message saying that my BIOS has been transfered to hibernate mode as temperature of laptop was increased than the specifications.

The exact error that i get is as below;

"The system bios has detected your notebook PC was placed in hibernation to avoid overheating . The system is now operating normally and your data should remain intact.

Overheating may occur if the cooling vents are blocked or the operating temperature exceed the specification. The notebook PC should return to normal operation once the situation is resolved.

System Temperature (90D)"

I am now planning to format my laptop but i need to recover the data and hence i am doing that using Ubuntu Live CD (Ubuntu Version: 10.04 LTS) but unfortunately that dvd just shows the option of Try-Install ubuntu but the ubuntu never really starts!

What can I do?

You can remove the hard disk from your laptop (sometimes this is fiddly work and needs care) and plug it into a desktop PC using an IDE/SATA to USB adapter or enclosure - they are relatively inexpensive.

If your laptop is overheating, check that dust isn't clogging it's (tiny) fans and that the fans are turning. The laptop will have air vents at the side, you should be able to both hear and feel air being blown out.