Can't install S2440L to my new computer

Hi, 

I have:

Dell S2440L Monitor + Driver 

Windows 8 64bit 

this is what i get when i'm trying to install it:

"The following connected monitors have been detected:
HP Plug and Play Monitor - HWP4227

Drivers for the following monitors have been found:
Dell S2440L(Analog) - DELA08A
Dell S2440L(HDMI) - DELA08B

Drivers for the following connected monitor can be installed:
None

Please connect your monitor before running this program."

Please help, tnx