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Asked on Super User by itsdevthen, 1 year ago. No reply there for at least a week.

Why does my HP 15-bs1xx series i5 laptop fan spin fast after I click the power button?

Laptop: HP 15-bs1xx series i5 Previously after I clicked power button, laptop boots but after 30 mins fan suddenly started running fast. This happened even in Safe Mode also. I was using laptop without battery for 4+ years. It was working good but now this issue arise. So last time I opened the laptop to see what issue, but I didn't change anything any components I closed as it is (I just removed motherboard and attach again).But after I closed and boot I can now see fan started running immediately after I press power button in laptop(this time not after 30 minutes). So I suspect thermal paste

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Why does my HP 15-bs1xx series i5 laptop fan spin fast after I click the power button?

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