Help: Motherboard Troubleshooting

[alvin777]

Hi. The heatsink-fan of the chipset (Nvidia CrushedK8-04 or CK8-04 I believe) on my ECS Nforce4-A939 (MCP platform) popped off an detached from the chipset when one of the hooks came off the board (the heatsink-fan it is held by a clip like spring to the chipset). I have soldered back that retaining hook, cleaned the chipset and heatsink-fan, applied Arctic Silver and have attached the heatsink-fan back. I've also checked on the connection to the board for things like the reset switch, power, hardisk LED. This board has Athlon64 3200, 2 x 512 Kingston memory DDR1. Nothing, including the chipset seems to be melted.

When I push the power ON and wait a while:

 

- LED on the power button lights up

- orange LED on the motherboard lights up <-- what is the orange LED is for by the way?

- all fans from the CPU, power supply, chipset and PCI-e video card are spinning

- USB Wacom Tablet LED and USB mouse lights up

- PS2 keyboard has power but the Num Lock key doesn't light up if you press it

- it is possible to turn it off by pressing the power button for 4 seconds

 

- no hardisk LED activity (I've checked the connection to the board of the hardisk LED connector)

- no lights from the two LED light on the LAN port at the back

- no light from the LCD monitor power LED; when switched on, it turns green then stays orange

 

Everything seems normal except for 6-7.

 

 

If I isolate the problem, detach connections for the SATA and IDE, floppy and remove the video card and memories and put only the video card or put only the one memory:

 

- no beep (I don't know if there should be a beep though), it just turns on seemingly operating normally with the board's orange LED light lighting up

 

If I turn off the power button:

- LED light in the optimal mouse still light when connected to the front bezel USB port but if you connect the mouse to the back USB port, it's off.

 

Where could the problem be? It started upon seeing the chipset's HSF pop out from the chipset. Could this be an overheated chipset or a virus? Any solutions?

 

Thank you for your time and have a good Holy Week.