Unsolved
1 Rookie
•
4 Posts
0
996
September 10th, 2023 20:12
Optiplex 7470 AIO How to add UEFI boot from USB?
I need to boot Dell Optiplex 7470 AIO. I have already an USB drive prepared with Rufus. The same USB has worked with other computer earlier, but this computer does not give an option to use USB Storage Device for UEFI boot, the only choise is Windows Boot Manager.
How can I add a new boot option?
No Events found!
bradthetechnut
7 Technologist
•
9.1K Posts
0
September 11th, 2023 01:38
With flash drive installed: 1. It won't just boot from it? 2. If you immediately and repeatedly press F12 upon startup, flash drive (or USB device), doesn't show? 3. What OS are you trying to install?
On a working PC, make a bootable flash drive from the Microsoft site.
Heiku
1 Rookie
•
4 Posts
0
September 11th, 2023 05:51
The prepared USB is inserted before turning the computer on.
With F2 I get
EdT586
1 Rookie
•
28 Posts
0
September 12th, 2023 21:37
Strange normally with F2 you boot into the UEFI(BIOS) page and with F12 the boot sequence page. I am sure you have it reversed !
bradthetechnut
7 Technologist
•
9.1K Posts
0
September 14th, 2023 02:57
It might be Rufus. Another user had the same problem with a different Dell.
Was BIOS in Legacy mode when the bootable flash drive was made?
(edited)
Heiku
1 Rookie
•
4 Posts
0
September 14th, 2023 19:59
@EdT586 Yes, you are right, I mixed them when I wrote this.
Heiku
1 Rookie
•
4 Posts
0
September 14th, 2023 20:01
@bradthetechnut The BIOS was in UEFI mode when the flash drive was made. Also the same flash drive worked fine with other computer after trying to re-image this computer. so the flash drive seems to be ok.
bradthetechnut
7 Technologist
•
9.1K Posts
0
September 14th, 2023 21:28
How old or new is your 7470? If it's 5+ years old, replace the size 2032 CMOS battery. Bad batteries cause boot problems, BIOS problems, and so on. My Precision 3620 wouldn't even see an SSD to load on until I replaced a bad battery.
EdT586
1 Rookie
•
28 Posts
0
September 15th, 2023 00:47
@Heiku Try plugging your USB drive in another USB port and see if it will detect it. I would also reset the BIOS and see if it will detect it after it reboots again.
bradthetechnut
7 Technologist
•
9.1K Posts
0
September 15th, 2023 01:25
2 good points by @EdT586 . Try a USB 2.0 port if it's not working from a 3.0 port
When I remember to mention resetting BIOS, I like to include: How to Perform a BIOS or CMOS Reset and Clear the NVRAM on Dell Computers
(edited)