Hallo, I have Ninja Plus RevB on my girlfriend's computer, it is an AMD Athlon 64 X2 4600+ dual core Manchester chip (socket 939), Gigabyte GA K8NXP-9. I put Vista on but it keeps crashing to BSOD

.
Now I took it off today and had a look and the trace of the thermal grease shows the heatsink on the bottom of the Ninja is not covering the entire chip by about 2-3mm on each side, so I'm guessing the exposed part of the chip is running hot and causing the crashes cos this is known as a hot chip. I measured the chip and it's approximately 37.5mm x 37.5 mm whereas the Ninja baseplate is only 36mm x 27mm usable area as the edges appear to be curved and not in full contact with the chip surface.
Is there some modification of the Ninja that will make a bigger base plate on the heatsink or something to completely cover the cpu?
I am very pleased with the Ninja on my own computer (Q6700) and would like to get it working if possible on this other box even though I know it's an older chip.
Now I am looking at the
review of the all copper Ninja and the baseplate looks bigger and doesn't have the curved edges, can someone tell me the dimensions of the baseplate contact surface for this new model plz?
