No signal to monitor and possible PSU issue

[SIZE=14px][FONT=Arial]Okay here’s my situation. With my first build I would have to unplug my psu and plug it back in a few times for it to stay turned on. Now for my second build (which is just an upgrade from my first build) I turn my computer on, no signal to my monitor. The MEMok light goes red then turns off, then 3 out of the 4 red GPU lights turn on. I then will try and unplug the GPU and plug it back in until I get no red lights. Then there is still no signal. Also it doesn’t stay like that for long if I restart it once it goes back to the red light dance. I tried both my monitor and hdtv. I have checked every power connection and reconnected each one. I also reseated the ram.[/FONT][/SIZE]

[SIZE=14px][FONT=Arial]First Build:[/FONT][/SIZE]
[SIZE=14px][FONT=Arial]MotherBoard- M4A8TD/USB3[/FONT][/SIZE]
[SIZE=14px][FONT=Arial]CPU- Amd Phenom II x4 965 black edition[/FONT][/SIZE]
[SIZE=14px][FONT=Arial]PSU- [/FONT][/SIZE][SIZE=11px][FONT=Verdana]OCZ / GameXStream / 700-Watt / ATX / 120mm Fan / SATA Ready / SLI Ready / EPS / Active PFC / Power Supply[/FONT][/SIZE]
[SIZE=14px][FONT=Arial]GPU- Ati Radeon HD 4870[/FONT][/SIZE]
[SIZE=14px][FONT=Arial]RAM- DDR3 2g x2HDD- sata 1TB[/FONT][/SIZE]
[SIZE=14px][FONT=Arial]ROM- Broken DVD drive[/FONT][/SIZE]
[SIZE=14px][FONT=Arial]Second Build:[/FONT][/SIZE]
[SIZE=14px][FONT=Arial]MotherBoard- M4A8TD/USB3[/FONT][/SIZE]
[SIZE=14px][FONT=Arial]CPU- AMD Phenom II x4 965 Black Edition - [/FONT][/SIZE][SIZE=3][FONT=helvetica]CORSAIR H40 120mm High Performance Liquid CPU Cooler[/FONT][/SIZE]
[SIZE=14px][FONT=Arial]PSU- [/FONT][/SIZE][SIZE=11px][FONT=Verdana]OCZ / GameXStream / 700-Watt / ATX / 120mm Fan / SATA Ready / SLI Ready / EPS / Active PFC / Power Supply[/FONT][/SIZE]
[SIZE=14px][FONT=Arial]GPU- Ati Radeon HD 4870[/FONT][/SIZE]
[SIZE=14px][FONT=Arial]RAM- DDR3 2g x2[/FONT][/SIZE]
[SIZE=14px][FONT=Arial]HDD- SSD 120g and 2T HDD[/FONT][/SIZE]
[SIZE=14px][FONT=Arial]ROM- Blueray Burner[/FONT][/SIZE]

Any help would be greatly appreciated.

try opening up one ram slot and see how it would run. sometimes it just can be your ram setting in BIOS.
the settings can be off for you duel channel settings. so if your computer starts with just 1 ram plugged in, that can be the case…

if that cant be the case then… id say faulty ram or faulty gpu, one of those…

good luck!

Yeah I tried that so I might have to buy a psu or gpu. Just want to determine which one it is first. Thanks for your input.