just checking back and the original card I tried was an X1300 pro which was installed on some of the dc7700 and according to couple of sites should work. So wonder whether I have an issue either with the mobo or psu.
Either way dont think its worth me fiddling anymore!
Although power requirements vary from a quoted wattage of between 20 watts and 40 watts depending on manufacturer both AMD and HIS suggest a PSU of 300 watts or above. The symptoms you describe are indicative of an underpowered PSU.
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