I have been using an MSI FX 420 notebook for just a little over two years. Two days ago it suddenly died without warning. I had it checked out and they told me that the motherboard is basically fried and the bios chip controller caused it. The rest of the components ( i5 processor, 8g ddr3 etc) are still working.
generally the whole board needs to be replaced. speak to the repair shop and ask them how much it would cost to repair and get back to us.
They said they could try to repair the board but the chances are 50/50. The replacement would cost about $350 and would take a while because the replacement board will be ordered overseas. Its very frustrating.