The UEFI BIOS has replaced the old BIOS which we now refer to as Legacy BIOS. (click on image to enlarge for better viewing) - Motherboard and CPU If the current input/output (I/O) port settings are different from the BIOS settings, the device may be inaccessible and your computer may stop responding (hang). It depends on Bios configuration. Otherwise choose “MBR (for legacy BIOS / CSM boot)” for BIOS-based PC, or UEFI computer running in legacy BIOS/CSM mode. Are you plugged into the USB slot labelled specifically for the KEYBOARD (usually at the top)? Unable to Enable Legacy Boot Mode or boot to non-UEFI device - ThinkStation C30, D30 and S30 Also had to update the USB drivers on WDS to support the keyboard/mouse. We are having to perform software upgrades and before we start, we have to use a PS/2 Keyboard and login to the BIOS to enable Legacy USB Supprt. Hi @mememe93 , Look under the Advanced tab in BIOS to enable Legacy USB support. Click to expand Universal serial bus controller. Loaded default settings. If the USB legacy mode came turned on in default settings, you could clear your CMOS to restore it to default settings. Make sure all USB options and Legacy USB support options are disabled or off. Click on Start Burn. Which do NOTHING. Once in the BIOS setup, check the menus for an option to enable or disable the onboard USB ports. . But, now I created a bootable USB for a Linux that does not support UEFI, but only Legacy. I cleared CMOS and the USB ports will not enable. If the conflict information indicates that there is a problem with the device, you may need to modify the settings for that device.For additional information about device conflicts, click the article number below to view the article in the Microsoft Knowledge Base: 133240 Troubleshooting Device Conflicts with Device Manager. - Disabled Security Boot AND Legacy Support together. For end-users, the difference is that UEFI BIOS is more secure. JavaScript is disabled. Click manufacturer_namePCI to USB Host Controller (where manufacturer_name is the name of the manufacturer), and then click Properties. Late 2013-2014 models support both EFI and BIOS, and default is BIOS. Enter the BIOS setup. This varies greatly by manufacturer, but generally speaking, it … The Legacy USB Support option only provides support of the USB ports during boot up and for other activities when the operating system isn't fully loaded. Press "Pause Break" before the Windows logo appears to halt the boot … Boot your computer from a Windows Installation Media (USB or DVD). To put PLoP on a CD, you will need either plpbt.iso or plpbtnoemul.iso from that zip file. How to Change Legacy to UEFI Without Reinstalling Windows 10 Last updated on February 28th, 2019 On the latest motherboard (PC/Laptops) models, the manufacturers have added the support for the UEFI (Unified Extensible Firmware Interface), in addition to the traditional BIOS (Basic Input Output System) firmware interface. I have been trying to enable the legacy boot options on an Inspiron 20 model 3043. I've updated my BIOs to the latest version but still no new features were added. It doesnt detect the stick but it works on my other newish laptops and pcs because they support the legacy option. After creating, you’ll find out that a UEFI bootable USB drive was formatted as FAT32 because NTFS is not supported for external boot media under UEFI. The BIOS stands for Basic Input Output System, which is a set of instructions in firmware controlling input and output operations. I've also tried going into the Bios to see if the Legacy USB Support was enabled, but it's not listed anywhere in the bios. The regular way of booting into software and operating systems is called “Legacy Boot” and must sometimes be explicitly enabled/allowed in the BIOS settings. BIOS display shows Legacy Support as Disabled, Secure Boot as Enabled (which is not what I set) Product Number: 1HP14PA#ABG . Your BIOS/UEFI should display some helpful information about this topic. c. Security -> PTT Security: PTT on? * 2. Download a Windows 10 ISO file It has worked for others. Here’s an image taken from the motherboard user manual (Sect 3.18) which shows the options.