No problem...sometimes I forget how long it took me to get used to doing some of these things (years, in some cases)
I'm not sure why a Dell system...would be receiving messages about HP Cue Device Discovery Service.
I see now, http://h30434.www3.hp.com/t5/Printer-All-i...rting/m-p/78167
Hope you have an HP Printer
To uninstall your video drivers:
Start/Run...type devmgmt.msc and hit Enter.
Click the plus-sign in front of Display Adapters...then double-click the detailed item now revealed. Write down whatever detail is now revealed, you will need it later.
At the Driver tab...click the Uninstall button, click OK on warning.
Reboot the system.
To reinstall...take your drivers CD for your system and it should autorun and install the appropriate driver.
If not, see Dell Video Drivers, Optiplex GX270
To install downloaded drivers, just double-click on the file you download from the Dell website.