Presuming your PC came preinstalled with Win7, that was an HP OEM version -- and unless you reinstalled using that very same version, you will encounter these problems.
Ordinarily, I would recommend using HP Recovery Media to restore your PC to its original condition. That would erase the entire drive, format the drive, and install the OS, the drivers, and the HP utilities.
Unfortunately, HP no longer stocks the recovery media for the older Win7 PCs.
You can try contacting HP Customer Support directly, using the links below, to see if you can order if from them: