Run revo and use it to uninstall your HP MediaSmart DVD Software. Right click on the icon of the program you wish to remove and select Uninstall. During the process you may be asked to delete registry entries, just select all and then click delete. Do the same for any left over files and folders. Once the uninstall has completed, reboot the PC.
Next, download the latest installer for MediaSmart DVD on the link below and save it to your Desktop.
If you don't have an extraction utility installed, download and install 7-Zip. Right click the installer you download, select 7-Zip, select extract files and then click Ok. Open the newly extracted folder, open src and scroll down until you see the setup application ( 6th from the bottom with a size of 310Kb ). Right click this Setup Application and select 'Run as Administrator' to start the installation. When the installation has completed, restart the notebook and see if you can now play your Blu ray discs in a better aspect.