Asus M3A won't post

[cousinvinnie7]

Hello, i have an ancient Asus M3a/AMD 5600 am2 w/4gigs ram,Coolmaster 650 PSU and was running MSI 880GT PCIE, til my video card started giving me issues and tried a Gigabyte GT430 EVGA - GeForce GT 610 2GB DDR3 and to no avail the system won't boot and these cards work on other systems,green light on the MB is on and when i hit the power button the fans spin for 3 secs and nothing and with no video card no beeps, also these video cards have no power connectors,the system boots and starts fine with MSI 8800gt, also I'm running Windows 7 64....thanks much

[uddarts]

a $20 multimeter on the psu 12v line(yellow) of a 4 wire molex is where i would begin.

cpu fan spins up with the rest?


ud

[cousinvinnie7]

That is one of the first things i thought of my voltages are good and I'm not over clocking , one thing i did run into at another forum, is that the computer thinks it still has the old video card still installed even thought i removed all drivers and the like, i might try powering the system down resetting the bios and installing the GT430,ill let you know how i make out...was hoping to get a few more months out of this rig but time will tell...it's been good to me for 6 years....TIA

[uddarts]

with the 430, is it still shutting down after 3 seconds?

the bios isn't concerned at initial start up which vid card is in it but clearing the bios is a good idea. be sure to power off the psu.

try disconnecting all drives.

try each stick of memory individually in several slots.

do a visual inspection of caps on the board.


ud