ok i have a laptop that i replaced the power jack on it myself (yes i did it right i do this alot.) i tested the jack made sure it has a charge gains a charge and can run off the A/C powersupply everything was great until about a day later i was getting symptoms similar to overheating, my computer would just shutdown without warning and the bottom of my laptop would be very warm so i have replaced the thermal paste and cleaned out the heatsink /fans also reseated the memory could this be a bad CPU?, i have a P4 3.2 in my laptop so i know its not an energy efficient laptop made CPU. any advice anyone? im lost.