New
#31
Leave it out for 15 to 30 mins, with the main AC power cord dis-connected from the wall AC socket. This will re-set the BIOs to the default settings. Then put the C-Mos battery back in place correctly, Plug in the AC power cord. Try to turn computer ON. What happens ?
Try no RAM at all and tell us what happens. CMOS battery in after having been out for a half hour.
Do you get any beeping?
Do you get anything at all to display on your monitor?
Do you have the CPU inserted correctly with the little triangle on the corner of the CPU matching the correct corner on the MB socket ?
Re-seat your 20/24 pin ATX power supply connector to the MB. Check for the proper connection of the Power ON/OFF switch wire to the correct MB header pins.
Sometimes I have reversed the Power switch with the reset switch