Problem: customer reported to handed this laptop .its too slow while functioning and use to work heavy apps.and we stick to not complete important work.its collapsing to reach at end. its above 10 years old laptop.we thought trouble in pch but after disassemble the laptop and notice .conductors are cover by dust.we clean .but that is not problem.we discoverd ultimately,heatsink fan blocking by dust.
solution:
we clean the fan complete and wings.testifying the fan motor and other problem.its well .its not slowing while works.