A quick note of warning about applying Thermal Grease / Heatsink Compound to CPU'S. Don’t use loads! Not only will it not work very effectively, if you really go overboard it can leak over the sides of the cpu and get underneath as it has in the image. Questo CPU (A pentium 4) was given to me as “I think its broken”.
When I flipped it over I wasn’t surprised — there is so much arctic silver compound on it that it got below the cpu and shorted out several pins (mostly top left, some top right and bottom centre). The owner in question was very lucky — after a thorough clean the “broken” CPU came fully back to life
“Hi James I realise it has been a long while, but I just checked this on windows 11 (build 23H2)…”