Member Avatar for nope200

My sisters laptop has had overheating problems so we took the back cover off one night and unscrewed the CPU fan which had I guess the heat sink connected and was covering the proccessor.all I did was turn the proccessor screw thing and took out the proccessor to look at it.I put it back in and tightened it and when we finished cleaning the fan and vents.I hooked the Computer back up with heatsink and CPU fan back on.now when u start it up the proccessor within 2 minutes gets to an increible tempature! the heatsink burnt my hand and only from running 2 mins.before that the computer would boot and run for atleast couple hours:now I can't even get past windows boot before it restarts itself.what did I do to the proccessor.it worked fine before I took it out for a minute.I don't get it at all.I use to build desktop computers I built my own and I've never expierenced this problem tho it's my first time working on a laptop.help someone please.

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Short summary: removed the laptop CPU/heat-sink briefly, cleaned the fan and vents, then reassembled. After that the IHS/heatsink gets extremely hot within two minutes and the system reboots before Windows loads. Fast, severe heating after a re-seat almost always means the processor is not transferring heat into the cooling assembly properly — not necessarily that the chip itself failed.

A focused diagnostic and reassembly checklist to follow in order:

  • Power off, remove battery and AC, discharge static by touching ground. Remove the cooling assembly and inspect the mating surfaces. Look for full, even contact imprint on the CPU heat spreader and the heatsink base; an imprint that’s only on one side or missing implies poor contact or misalignment.
  • Inspect the CPU and socket closely for bent pins, debris, or a misaligned orientation. Verify the retention mechanism is seated and the CPU is fully down in its socket (laptop retention clips and springs are often model-specific).
  • Clean the interface residues with high‑purity isopropyl alcohol (70–99%) and a lint‑free cloth or coffee filter; avoid solvents like acetone. Use a small, even amount of fresh thermal interface designed for CPUs (nonconductive is safest for laptops). Reinstall the heatsink by tightening screws/springs in the original order and in small, even increments so pressure is uniform.
  • Confirm the fan header is plugged into the correct board connector and that the fan spins under power before closing. Boot into BIOS and watch temperatures there — if BIOS reports high temps immediately, the mechanical contact is still wrong. If temps look normal in BIOS but shoot up later, check for driver/firmware issues or failing fan speed control.

If, after correct cleaning and even re-torquing, temperatures are still extreme within minutes, consider a damaged heatpipe/heatsink, a cracked IHS, or socket damage; those usually need a repair shop or parts replacement. The steps above build on points from and but focus on laptop‑specific seating, screw order, sensor checks, and safe cleaning so the problem can be isolated quickly.

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Member Avatar for caperjack

did you clean off old compund and install new heatsinc compund before reasemble

Member Avatar for JorgeM

If the CPU is not overclocked, it shouldnt overheat if you have compound between the CPU and heatsink. If there is a fan over the heatsink, make sure its actually spinning.

Member Avatar for nope200

No -.- I guess that would be problem.how should I clean the goo off? And where can I get some more to put on?thanks guys

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