About a week ago my laptop starting randomly shutting off. at first i didnt think anything of it, but the last few days it has gotten really bad. i am not doing anything that could cause it, it has good airflow, it is fairly level, and i am not beating on it or anything. it shuts off sometimes when i set it down, when i am typing. one time it shut off when my wrist was barely resting on the left side under the keyboard. any ideas on what the problem is?