A friend has a Compaq CV535 Monitor and is using a HP modem. We cannot get the screen to go from blank to showing icons of the programs on the computer. The system is hooked up to a router with high speed Road Runner. How do we go about getting the monitor to work...still in very good shape...and please contact us at szakacs19@yahoo.com to let us know how to even do the settings and what programs we can download to the hard drive.