Gateway 825gm wont tun on. just replaced on/off switch. greem light on power supply and mother board blinking green

I think cleaning the ram copper lid may solve the problem.

get it replaced with a new one, atleast 450w

You may have a motherboard problem - check the BIOS battery first and then re-seat the CPU and RAMs.

no..you just not fixed the ram sticks properly.. remove them and fix properly..your pc will start.

your motherboard might be gone. what blinks?

if the power button shows orange blink contact service center for SMPS repaire

Ok, this is a mother board issue. the entire mother board seems to be malfunctioning. the blinking amber/green light is confirming this. the mother board may have some fried circuitry and it will have to be replaced in this situation.

I would recommend extracting the mother board and stripping it. look for any discoloring factors that will lead to a burn out location. this will direct you to the necessary repair zone.

Please rate and have a great day:)

3 flashes means the lamp door is not on correctly or the lamp door switch is broken.

Try resetting the bios by moving the cmos jumper to the clear position on the motherbaord for a minute or so.

Hope this helps?

If the power box is bad, The computer will not come on. if you only get a green light, you would need to start with replaceing the power box, if you get a new one and the same thing happens, then the mother board is bad too.