Your type of issue is often reported on the forum and most of the time this solution was found to be successful:
unplug the power to the pc then take out the battery, then hold the start button on ur laptop for 20-30 seconds,,,once thats done, continue with installing the battery again and power lead.. then simply press start on ur laptop, and voila!!!! this should work.
I had a similar thing happen to me today, except I didn't even get a cursor. Here's what worked (I found it on another forum). Take out the battery and disconnect the power cord. Hold down the power button for 60 seconds. Remove your finger from it. Reattach the power cord. Turn the laptop on, press * key. Leave it alone for a little while. I think mine took about 4-5 minutes for the screen to show up again. Once it comes up, go ahead and power down the laptop. Reattach the battery and turn it back on. Worked for me! Good luck.