Ricky, I would need to inform you that this motherboard (Intel Desktop Board D945PSN) has been out of support since June, 2008 and it is not in stock anymore. http://www.intel.com/support/motherboards/desktop/sb/CS-029308.htm
In order to get the exact model, you would need to search on the web since I’m not sure if there are still any available in stock.
Some basic troubleshooting you can try would be to remove the CMOS battery and leave the system without it for at least an hour. Then, put it back in and restart the system. http://www.intel.com/support/motherboards/desktop/sb/CS-028780.htm?wapkw=clear+cmos+battery#datetime
If you have another compatible processor, you may want to test it, just to discard if the one you were using, is defective.
Thanks for the reply, unfortunately i have tried this and it did not work.
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If the board doesn't recover from removing the CMOS battery for at least an hour (I would give it 24 hours), then you should inspect the board's electrolytic capacitors. Capacitors degrade with age and exposure to heat.
Look for bulging or leaking capacitors. The best way to check the capacitors is with an ESR meter, because not all defective capacitors have visual indications of being defective.
Do a Google search for testing capacitors with an ESR meter and recapping motherboards.
Thanks very much tjg79, I will try this over the weekend.
I did look for a bulging capacitor before but never checked them with my multimeter, hopefully this is the cause of the problem.