Gateway 3310 Computer won't boot, no beeps, no fans.. only green light

[coolnoble2121]

Gateway 3310 (desktop) 2 years old only. Replaced a powersupply; cmos battery; tried different hard-drive; it's not a power surge issue. also moved the memory to different slots.
Also unplugged everything and re-plugged a back. i am kind of stuck.. please i need some help.

thank you

 

[scatrdfew]

Try booting with one stick of RAM only, and alternate the sticks if the first one doesn't work. If still no POST check out this troubleshooting guide from another thread... some good tips.

http://www.tomshardware.com/forum/261145-31-build-post-checklist

 

[mamw93]

it could be that you may have done some electrostatic damage. Do you ear wrist straps or ground yourself first??? Also is the HDD spins that means it is good so you could rule that out. Also try the original PSU, yours could be overvolting or undervolting. You should make sure that everything on the motherboard is hooked up correctly. Last your ram is fine because you would at least get some fan action before the comp shuts off so it may be the the power switch lead became loose or is in the wrong spot.