<p>Causes of the &#34;missing or corrupt hal.dll&#34; error include, naturally, a damaged hal.dll <a href="https://www.lifewire.com/what-is-a-dll-file-2625852" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="1">DLL file</a> or a hal.dll file that has been deleted or moved from its intended location.</p><p>Additional causes may include a damaged or missing boot.ini <a href="https://www.lifewire.com/what-is-a-file-2625878" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="2">file</a> or possibly a physically damaged <a href="https://www.lifewire.com/what-is-a-hard-disk-drive-2618152" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="3">hard drive</a>.</p><p>There are few different ways that the &#34;missing or corrupt hal.dll&#34; error may present itself, with the first listing being the most common:</p><pre> <strong>Windows could not start because the following file is missing or corrupt:</strong> <strong>&lt;Windows root&gt;\system32\hal.dll.</strong> <strong>Please re-install a copy of the above file.</strong></pre> <pre> <strong>&lt;Winnt_root&gt;\System32\Hal.dll missing or corrupt:</strong> <strong>Please re-install a copy of the above file.</strong></pre> <pre> <strong>Cannot find \Windows\System32\hal.dll</strong></pre> <pre> <strong>Cannot find hal.dll</strong></pre><p>The &#34;missing or corrupt hal.dll&#34; error displays shortly after the computer is first started. <a href="https://www.lifewire.com/windows-xp-2626354" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="4">Windows XP</a> has not yet fully loaded when this error message appears.</p><h3>Hal.dll in Windows 10, 8, 7, &amp; Vista</h3><p>Other Windows <a href="https://www.lifewire.com/operating-systems-2625912" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="5">operating systems</a>, like <a href="https://www.lifewire.com/windows-10-2626217" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="6">Windows 10</a>, <a href="https://www.lifewire.com/windows-8-2626235" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="7">Windows 8</a>, <a href="https://www.lifewire.com/windows-7-2626265" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="8">Windows 7</a>, and <a href="https://www.lifewire.com/windows-vista-2626311" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="9">Windows Vista</a>, might also experience hal.dll errors but the causes are so different that it constituted an entirely different troubleshooting guide: <a href="https://www.lifewire.com/fix-hal-dll-errors-in-newer-versions-of-windows-2619245" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="10">How To Fix Hal.dll Errors in Windows 7, 8, 10, and Vista</a>.</p><h3>How to Fix Missing Hal.dll Errors</h3><ol><li>Restart your computer. It&#39;s possible that the hal.dll error could be a fluke.<br/><br/><strong>Note:</strong> Since hal.dll errors appear before Windows XP is fully loaded, it&#39;s not possible to <a href="https://www.lifewire.com/how-to-reboot-a-computer-2624568" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="11">properly restart your computer</a>. Instead, you&#39;ll need to force a restart. See <a href="https://www.lifewire.com/how-to-restart-anything-2624571" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="12">How to Restart Anything</a> if you need help doing that.<br/> </li><li> <a href="https://www.lifewire.com/change-the-boot-order-in-bios-2624528" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="13">Check for proper boot order in BIOS</a>. You might see the hal.dll error if the <a href="https://www.lifewire.com/what-is-a-boot-sequence-2625814" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="14">boot order</a> in <a href="https://www.lifewire.com/bios-basic-input-output-system-2625820" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="15">BIOS</a> is first looking at a hard drive other than your main hard drive.<br/><br/><strong>Note:</strong> If you&#39;ve recently changed your boot order or recently flashed your BIOS, this may be what&#39;s causing your problem.<br/> </li><li> <a href="https://www.lifewire.com/how-to-start-system-restore-from-the-command-prompt-2624522" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="16">Run Windows XP System Restore from a command prompt</a>. If this doesn&#39;t work or you&#39;re receiving the hal.dll error message before you&#39;re able to complete this process, move on to the next step.<br/> </li><li> <a href="https://www.lifewire.com/how-to-repair-or-replace-boot-ini-in-windows-xp-2624512" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="17">Repair or replace the boot.ini file</a>. This will work if the cause of the problem is actually Windows XP&#39;s boot.ini file and not the hal.dll file, which is often times the case.<br/><br/><strong>Note:</strong> If repairing the boot.ini does correct the hal.dll issue but the problem reappears after a reboot <em>and</em> you&#39;ve recently installed Internet Explorer 8 in Windows XP, uninstall IE8. In this specific situation, IE8 could be the root cause of your hal.dll problem.<br/> </li><li> <a href="https://www.lifewire.com/write-a-new-partition-boot-sector-to-a-windows-xp-system-partition-2624503" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="18">Write a new partition boot sector to the Windows XP system partition</a>. If the <a href="https://www.lifewire.com/volume-boot-record-2625818" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="19">partition boot sector</a> has become corrupt or isn&#39;t properly configured, you may receive the hal.dll error.<br/> </li><li> <a href="https://www.lifewire.com/locate-recover-data-from-bad-sectors-within-recovery-console-2624501" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="20">Recover data from any bad sectors on your hard drive</a>. If the physical part of your hard drive that stores any part of the hal.dll file has been damaged, you&#39;re likely to see errors like this.<br/> </li><li> <a href="https://www.lifewire.com/how-to-restore-hal-dll-from-the-windows-xp-cd-2624517" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="21">Restore the hal.dll file from the Windows XP CD</a>. If the hal.dll file is truly the cause of the problem, restoring it from the original Windows XP CD may do the trick.<br/> </li><li> <a href="https://www.lifewire.com/how-to-perform-a-windows-xp-repair-install-2624915" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="22">Perform a repair installation of Windows XP</a>. This type of installation <em>should</em> replace any missing or corrupt files. Continue troubleshooting if this does not resolve the issue.<br/> </li><li> <a href="https://www.lifewire.com/how-to-clean-install-windows-xp-2624911" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="23">Perform a clean installation of Windows XP</a>. This type of installation will completely remove Windows XP from your PC and install it again from scratch.<br/><br/><strong>Note:</strong> While this will almost certainly resolve any hal.dll errors, it is a time-consuming process due to the fact that all of your data must be backed up and then later restored.<br/><br/><strong>Important:</strong> If you can&#39;t gain access to your files to back them up, you should understand that you will lose them all if you continue with a clean installation of Windows XP.<br/> </li><li> <a href="https://www.lifewire.com/free-hard-drive-testing-programs-2626183" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="24">Test the hard drive</a>. If all else has failed, including the clean installation from the last step, you&#39;re most likely facing a <a href="https://www.lifewire.com/computer-hardware-2625895" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="25">hardware</a> issue with your hard drive but you&#39;ll want to test it to be sure.<br/><br/>If the drive fails any of your tests, <a href="https://www.lifewire.com/how-to-replace-a-hard-drive-2626200" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="26">replace the hard drive</a> and then <a href="https://www.lifewire.com/how-to-clean-install-windows-xp-2624911" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="27">complete a &#34;new&#34; installation of Windows XP</a>.</li></ol><h3>Need More Help?</h3><p>See <a href="https://www.lifewire.com/get-more-help-2625173" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="28">Get More Help</a> for information about contacting me on social networks or via email, posting on tech support forums, and more. Be sure to let me know what steps you&#39;ve already taken to resolve the &#34;missing or corrupt hal.dll&#34; issue.</p><p>If you&#39;re not interested in fixing this hal.dll problem yourself, even with help, see <a href="https://www.lifewire.com/how-do-i-get-my-computer-fixed-2625167" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="29">How Do I Get My Computer Fixed?</a> for a full list of your support options, plus help with everything along the way like figuring out repair costs, getting your files off, choosing a repair service, and a whole lot more.</p>