I just built a PC using a AMPTRON K7- 825LM . Ordered 2 boards for 2 systems. Built it correct witht he bundled 1.2 ghz AMD DURON CPU all jumpers correct and no power. Even the case's fan will not power up. Called the vendor and went thru a double check of the CMOS jumper etc. Still no power. I cannot believe both boards are bad. Any ideas?