Before opening the case, verify if your laptop is still under warranty. If you're not under warranty, you may be out of luck. I had a client recently whose Compaq laptop started smoking. In the past, vendors would replace the computer because it was a safety concern, but HP has been useless in this case. The Middle Eastern "support" is sticking to the end of warranty status.
And people wonder why our city isn't switching to HP with their lower prices....
If you end up replacing your laptop, purchase a notebook hard drive enclosure so you can pull anything off you haven't already backed up. The enclosure will give you the added benefit of an external hard drive for making backups in the future.
I can't vouch for the safety of the site or file, but this
appears to be the service manual for your laptop. You should be able to find what you need for opening up the case. Look for any signs that it was fried - discoloration, bulging resistors/capacitors, etc. MOST IMPORTANT STEP: Remove the battery(ies) and power, then hold the power button down for 10 seconds to make sure there's no residual power left in the system.