[ 7.129981] CPU0: Temperature above threshold, cpu clock throttled (total events = 74)

[surreal <firewalrus@gmail.com>]

[    7.129981] CPU0: Temperature above threshold, cpu clock throttled (total events = 74)
[    7.130633] CPU0: Temperature/speed normal
[    7.141110] CPU0: Temperature above threshold, cpu clock throttled (total events = 75)
[    7.141763] CPU0: Temperature/speed normal
[    7.151465] CPU0: Temperature above threshold, cpu clock throttled (total events = 76)
[    7.152120] CPU0: Temperature/speed normal

i got this message while starting up the pc. What is it trying to tell? And how to prevent it from appearing again?

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Harshad Joshi