I agree with the PSU comment... 220W is probably not enough anyway... You should add up what each components power needs are and then buy a PSU that is higher than that.
Check the memory chips, make sure they are seated well. Take the chip(s) out and reseat them. It looks like you might only have 1 chip but if you have 2, try one at a time.
I've changed the PSU to 700W Aerocool E80.... but the thing is, CPU fan, and GFX running well, but somehow on monitor it said no video input... and my optical drive kept showing the blinking green... not open when i push the button... any ideas?