Only one of them is working with the Iiyama ProLite E1700S monitor on a HDMI-DVI kabel. no adapter between.
I've checked the intel drivers, display drivers and displaysetting and they are the same on the fit-pc's. But only one is working.
The other it-pc's have no connection with the ProLite E1700S monitor because the monitor gives No Signal and drops off-line.

I've tried all three xpdriver installers provided in the downloadsection but none of them gets the ProLites going.
All four PC's are working with an other monitor (Samsung SyncMaster 172t)
Wat can be the difference between the one and the other three?

I have three Iiyama ProLite 1700S monitors here and only one Samsung so you see it would be nice to get the Prolites going or else I have to buy new monitors.