Software conflict with a new HP scanner. Need some help and advice.

I have a software conflict. I bought a new HP Scanjet 4890, and have installed the HP software appropriately. When I open the scanner software program called "HP Solution", my computer monitor goes black for about 4 seconds, and then it lights up again, but all the icons including the HP Solution screen, are a harsh, abnormally vivid color. When I close that program, there is again a 4 second darnkness, and then the screen is perfectly normal again. While the HP solution screen is open, I can operate the scanner successfully. But I'm scared about whatever it is causing the conflict and instability. I have uninstalled/reinstalled the HP software multi times.  Hewlett-Packerd support techs say the problem is a Dell issue within my computer. The computer did, and still does, work fine except for this one issue.  Can anyone help me?