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Why does the fan run at full speed when the system first boots up? - Acer Community
<main> <article class="userContent"> <h3 data-id="this-article-only-applies-to-aspire-c22-860-and-aspire-c24-860-models">This article only applies to: Aspire C22-860 and Aspire C24-860 models</h3> <p>Acer has found a small item in the BIOS that may cause the CPU Fan to run at full speed when your computer starts. This may happen intermittently. You can resolve this issue by updating the BIOS on your system.</p> <ol><li>Visit the <a rel="nofollow" href="http://us.acer.com/ac/en/US/content/drivers">Drivers and Manuals section</a> of the Acer support website.</li> <li>Enter your <strong>Serial Number/SNID</strong> or search for your product by Model.</li> <li>Select <strong>BIOS</strong>, then click the <strong>Download</strong> link for BIOS version <strong>R01-A2</strong> (or later).</li> <li>Unzip the file and run the <strong>Flash.bat</strong> file to update the BIOS.</li> </ol><meta content=""></meta> </article> </main>