Hi!
I am trying to reinstall the driver/software package of this product because after about 3 weeks ago the scanning stoped working.
Now I am unable to reinstall the drivers. Windows says You have no permission. (even with built in Admin account)
In the device manager I can see the HP DeskJet 3520 series devices under "other devices" but every instance (plenty of them) is either in state "?" or "!".
The "?" states says that one of the driver dll is not signed digitaly (C:\Windows\System32\hpinkstsb011lm.dll)
If I also forced a manual install but the windows complains only in ful Administrato mode, that the Digital Signature is missing.
The HP official driver install package terminates after finding the device online. The USB install also fails.
The printer and the programs in associations however works well with an another computer (Win7 Ultimate 64bit English)