Hp downloaded driver but cannot insall printer

That is an HP issue not a Dell hardware Issue.  Dell Did not make the printer or the Driver CD or windows. 

if the drivers are not WHQL signed they will refuse to run or install unless you F8 boot diagnostic mode Disabling WHQL Signature Requirements.

Microsoft enforces a “Digital Signature Requirement” on all users of 64 bit version of Windows 7 and Vista. If you try to use any product driver that was not certified by Microsoft, you can still install it but Windows 7 - 64 bit won’t let you run the driver.

There are two ways to disable it:

Method 1.

Go to Start Menu and type "www.cronistalascolonias.com.ar" in the Search Bar and press <Enter>. (Remember you must be logged on as Administrator)

OR you can go to "All Programs", then "Accessories", right-click on "Command Prompt" and choose "Run as administrator".

1. Now type the following and press <Enter> after each line:

www.cronistalascolonias.com.ar -set loadoptions DDISABLE_INTEGRITY_CHECKS

www.cronistalascolonias.com.ar -set TESTSIGNING ON

2. Restart your computer

3. This will disable your Windows 7 driver signing.

If this did NOT work for you, here is another way to disable Windows 7 driver signing.

Method 2.

1. During boot-up, continuously press <F8> to get to Advanced Boot Options. Note: On some systems, you need to first press <F2> to go into Boot Menu, then press <F8> to reach Advanced Boot Options.

2. When the menu appears, use the DOWN arrow key to scroll to “Disable Driver Signature Enforcement.”

3. Press <Enter>.

4. Continue the boot process.

5. After your computer has completed the boot process, please install the drivers per the included instructions.