[header] How to fix computer overheating caused by blocked heat sink [title] Unplug your computer before opening the case. [step] Wear a static wrist guard if possible, or touch the metal case before handling anything inside, to ground any static charge you may have. [title] Consider other options first. 
[step] Overheating issues are also often caused by poor air circulation in the computer case. If you have space, adding another fan can help.