Motherboard sparking after attach detach used ram

[azamazkaban]

I just bought a new ram from my friend which is used. Originally i have 2gb only and get it from my friend 4gb more so the total is 6. And at that time im using 32 bit so in my pc it only appear 2gb ram. So after 1 month i upgraded to 64bit, but still appear 2gb only. So i just attach and detached my ram suddenly my motherboard causing spark and pc cant be turned on.

Im using:
CPU: Intel i3-2100 3.10ghz
MOBO: Emachines ET1870
GPU: ATI RADEON HD 5450
PSU: 440 wt.

Theres a burn mark above my ram slot. May i know which part of my item is survived?

 

[2sidedpolygon]

Yikes! That's not good at all. Try cycling all your RAM through all your slots and see if any config gets it to boot. I suspect either your entire board, your RAM, or your RAM slots are fried, or any mixture of those. You can only hope that's as far as the damage goes.

 

[norcalsc]

did you unplug PC before you pulled RAM?

 

[azamazkaban]

I only unplug psu and turn off the switch

 

[azamazkaban]

It just turned out my psu is 250 w only.

 

[2sidedpolygon]

It just turned out my psu is 250 w only.

Well that's probably your issue, and your motherboard is almost certainly fried, along with some other components as well.