STOPP!! you've reset the bios right? unplug, remove watch battery, go get drunk (ok wait any way you want..) install battery.. power on..
okay, i like your proposal... i know that my cpu and vga are working properly.
so i will start as said, but before that i will recheck the power supply connectors for the third time.
then start -"remove ram, does it post, unplug drives, does it post.. keep going until it works or your mobo is sitting on a table. aaannndd.. reverse back together one part at a time, restarting each time."
so i remove the battery and still no luck, then removed the ram sticks and no luck , and the drives same no boot...