Xproject187,
If java is working for other apps and websites then java is most likely not the problem. It sounds like something in PC-Doctor is corrupted or missing. A uninstall and reinstall should fix you up.
You can go to the HP website and put in your Pavilion A1712N then go to drivers and downloads. If there is a newer version of PC-Doctor for your model it will appear there. If it is not there, give HP support a ring for the download location or you should be able to reinstall it from your recovery disks. Since we do not “officially” provide end user support for OEM systems it would be best if you gave HP support a call and asked them for the preferred method to accomplish this.
-Fred