I have a dell inspiron 4600c and my northbridge chiptset heatsink FELL OFF. One of the mounting Hooks is now missing and i can't get the heatsink back on without it. I would just use thermal paste to glue it back on but the system keeps giving me a alert as soon as i boot saying the chipset heatsink is missing. Turns out the hooks when connnected to each other through the z wire clip thingy, form a circuit allowing the system to boot. Are these hooks soldered on or are they some how pushed into place, and i can't seem to find where to buy replacement hooks either.