Differences

This shows you the differences between two versions of the page.

--- other:bios [2021/06/17 17:34] – [Updating the BIOS] jypeter
+++ other:bios [2022/06/30 09:27] (current) – [Entering the BIOS] jypeter
@@ Line 1: / Line 1: @@
 ====== BIOS, diagnostics and other start-up notes ======
-<note important>
-You can also run the **built-in diagnostics** in case of a [[other:win10crash#hardware_crash|hardware crash]]</note>
 ===== Crashed computer =====
-You can try the standard [[https://www.reddit.com/r/techsupport/comments/12nyre/30_second_power_button_trick/|hard reset trick]]
+Check the [[other:win10crash|Recovering from a Major Hardware or Windows 10 Crash]] section
+===== BIOS =====
-More details in:
+==== Determining the BIOS version ====
-  * **Dell**:
+The BIOS version is usually displayed quickly when a computer is booting, and when [[other:bios#entering_the_bios|you are in the BIOS options screen]]
-    * [[https://www.dell.com/support/contents/fr-fr/videos/videoplayer/how-to-recover-from-booting-issues-using-the-bios-recovery-tool/6079779755001|How to recover from booting issues using the BIOS Recovery Tool]] video
-    * [[https://www.dell.com/support/kbdoc/en-us/000129583/no-post-no-power-no-video-on-a-dell-desktop-computer|No POST, No Power, No Video on a Dell Desktop Computer]]
+You can also get the BIOS version when your operating system is running!
-    * [[https://www.dell.com/support/kbdoc/en-us/000141584/how-to-troubleshoot-a-no-post-issue-on-a-dell-notebook-pc|How to Troubleshoot a No POST Issue on a Dell Notebook PC]]
-  * **HP**:
+=== From Windows ===
-    * [[https://support.hp.com/us-en/document/c04718479|HP PCs - Computer Does Not Start (Windows 10, 8)]]
-  * **Intel**:
+Use the [[https://support.microsoft.com/en-us/topic/description-of-microsoft-system-information-msinfo32-exe-tool-10d335d8-5834-90b4-8452-42c58e61f9fc|msinfo32]] command (i.e. type ''msinfo32'' in the search field at the bottom left of the screen, and then launch the System Information app) and check the //BIOS version// line in the //system summary// screen. You will also get lots of other useful information about your computer (e.g. computer name)
-    * [[https://www.intel.com/content/www/us/en/gaming/resources/why-wont-my-computer-turn-on.html|Troubleshooting - Why Won't My Computer Turn On?]]
-===== BIOS =====
+=== From Linux ===
+Use the [[http://manpages.ubuntu.com/manpages/xenial/man8/dmidecode.8.html|dmidecode]] command: ''dmidecode -s bios-version''
+<code>$ sudo dmidecode -s bios-version
+[sudo] Password for your_login:
+.10.0</code>
 ==== Entering the BIOS ====
-Power off the machine, then power it on again **and** press repeatedly the appropriate key several times while the computer is starting
+Power off the machine, then power it on again **and** press repeatedly the appropriate key several times while the computer is starting, until you see the BIOS options screen. This should take place **before** you have to type the Windows //bitlocker// password, or the Linux (de)crypting password
 |  Dell  |  ''F2 ''  |
-|  HP  |  ''ESC ''  |
+|  HP  |  ''ESC''  or ''F10''  |
-==== Enabling boot on a USB drive ====
+==== Enabling boot on a USB drive in the BIOS ====
-=== Dell ===
+=== Dell BIOS ===
-Settings => General => Boot Sequence: //USB Storage Device// must be selected, and in the first place of the Boot Order
+''Settings'' => ''General'' => ''Boot Sequence'': //USB Storage Device// must be selected, and in the first place of the Boot Order
 ==== Updating the BIOS ====
-  * **Dell**:
-    * Healthy Windows computer: check the [[https://www.dell.com/support/home/en-us|support page]]
-    * Crashed Windows, or healthy (or crashed) Linux computer: use a USB key to update the BIOS, following the steps in the [[https://www.dell.com/support/contents/fr-fr/videos/videoplayer/how-to-recover-from-booting-issues-using-the-bios-recovery-tool/6079779755001|How to recover from booting issues using the BIOS Recovery Tool]] video
-  * **HP**:
 <WRAP center round important 60%>
-If the BIOS update does not seem to work (no update takes place), check this [[https://wiki.lsce.ipsl.fr/pmip3/doku.php/other:win7towin10#bios_update|HP BIOS update]] section
+Updating the BIOS is safe, but it may be a good idea to get help from somebody who has already done it. Your computer may restart several times, blink, etc, before the update is complete.
-</WRAP>
+Be sure to be connected to a power supply during the update
+If your Windows computer is protected by **bitlocker** at boot time, you have to [[https://www.dell.com/support/kbdoc/en-us/000125409/how-to-enable-or-disable-bitlocker-with-tpm-in-windows#TOC05|suspend bitlocker]] (//suspend//, and **not** //disable//), **before rebooting**. [[https://docs.microsoft.com/en-us/troubleshoot/windows-client/windows-security/suspend-bitlocker-protection-non-microsoft-updates|more info]]
+The BIOS update will take place during the boot time, then Windows will start and bitlocker will automatically start again </WRAP>
+  * **Dell**:
+    * Healthy Windows computer:
+      * Start the [[https://www.dell.com/support/kbdoc/en-us/000177325/dell-command-update|Dell Command Update]] program ,look for available updates (BIOS updates and others), and download them\\ ''Start'' => ''Dell Command Update''
+      * check the [[https://www.dell.com/support/home/en-us|Dell Support page]], enter your Dell computer Serial Number (if it is not automatically detected), and check the BIOS related information
+    * Crashed Windows, or healthy (or crashed) Linux computer: use a USB stick to update the BIOS, following the steps in the [[https://www.dell.com/support/contents/fr-fr/videos/videoplayer/how-to-recover-from-booting-issues-using-the-bios-recovery-tool/6079779755001|How to recover from booting issues using the BIOS Recovery Tool]] video
+  * **HP**: \\ <WRAP center round important 60%>
+If the BIOS update does not seem to work (no update takes place), check this [[https://wiki.lsce.ipsl.fr/pmip3/doku.php/other:win7towin10#bios_update|HP BIOS update]] section
+</WRAP>
     * [[https://support.hp.com/us-en/document/c00007682|HP Consumer Desktop PCs - Updating the BIOS (Basic Input Output System)]]
     * [[https://support.hp.com/us-en/document/c00042629|HP Consumer Notebook PCs - Updating the BIOS (Basic Input Output System)]]