PC failure after restarting from IHS setup
PC failure after restarting from IHS setup
Hi, I see you're dealing with thermal issues on your Lenovo Idea Centre T540-15ICB G system. After trying a new case and cooler, the temperature still stays high—especially during idle at 40°C but reaching 87°C under load. The IHS isn’t connecting properly, which is preventing proper cooling. You might want to check the thermal paste, ensure the cooler is seated correctly, and verify that all connections are secure. If the problem persists, consider cleaning the heat sinks or replacing the cooler if necessary.
Next time don't lap it lol. First off 87c is completely fine, if it was 100c then maybe, but definitely not at 87. And modern CPUs don't need to be lapped anyways, just don't do it. If you want to go extreme with thermals, just use liquid metal, but don't lap. To say how to fix it we would need more information. Maybe you damaged your cpu when lapping and need a new one? Maybe you just accidentaly unplugged a power cable. Unplug and replug all the motherboard cables just to be sure.
Are you certain everything was removed completely after the polishing step? As discussed, could you explain your polishing method? Were you certain no surface mount parts fell off during the bottoming process (while attempting to secure it)? Polishing the CPU shouldn't cause damage; any issues would likely stem from process errors, moisture exposure, or improper cleaning. Even minor inconsistencies should not prevent proper startup. What happens next in the system—do the fans activate?
Used a fine grit sandpaper and cleaned everything with 97% isopropyl alcohol. I think there was a small gap between the IHS and the chip, maybe some metal contact and water got in, which likely led to the failure. It probably needs a completely new CPU. I don’t know what exactly caused it, but I’m worried more laps will be needed soon as CPU prices keep rising.
A brief amount to notice the copper beneath. Moist bonding using 1000 grit paper.
The ideal alternative to LGA1151 is likely an i7-9700F, especially since you already own the GTX1650 and the F model lacks integrated graphics. KF might be costly, so consider your 200W power budget and the fact that stock BIOS doesn’t support aggressive XMP profiles for RAM.