Well, I checked all the registry settings as per a working PC power schemes which is working fine, but I am still left with this other PC not being able to shut off the monitor whichever power scheme I use. I have tried a different monitor with same results.
Ok problem solved Rapscallion. I uninstalled the VGA driver and reinstalled it from the motherboard cd and it seems to be working fine now. Many thanks for you help along the way. I certainly learned something about registry tweaks.
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