Question Not getting any signal when switched to new motherboard

Feb 6, 2022
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My old setup ran fine had ddr2 motherboaed, amd athlon x2 5000+ cpu, gtx 460 and 4gb ram. I changed to a new motherboard with a better cpu in it and is ddr3 and 2x 4gb ram (cpu is i3 2120) and same gtx 460 but i get no display
Ive tried:
Checked if gpu is fully in and plugged in which it is.
Cleaned the RAM.
Took cpu out and put back in.
Unplugged everything and plugged back in.
Tried running with 1 stick of ram.
Took out cmos battery.
Ive checked eveything is compatible.
Everything worked fine on ddr2 motherboard it always displays when i plug it in, the ddr3 runs like all fans work and can hear it booting up but no display, restart button works on case cause can hear it restarting. I notice if i power it off and try to power it on straight away it takes a while for it to turn on which didnt do with the other motherboard. Any help?!
 
Feb 6, 2022
2
0
10
Also gpu usually makes a like noise sequence like it starts stops starts then stops then would usually display but on this motherboard it starts then stops