Thanks for the response
main issue is with nv8. Think the mother board is blown now. Graphics card works. Have swapped Ram. PC boots until monitor powers up and green light comes on. Have spoken to Abit tech support and they think it is the board. I might have reset CMOS with mails cable plugged in still although machine wasn't on.
The other board has the same problem but also has SLI capability. I think it was set to this before although I would expect the PCI slots to be found first at boot. Another problem I have with yet another system is a read/write process error on trying to install software/drivers. This is Not RAM Idon't think, so will try another OS. Any suggestions or clues are greatly appreciated. If you are bored I have plenty more questions where they came from. Cheers Si