Would you mind telling the brand/model of the USB device that is not being displayed when you press [F10]; in addition to that, did you try other USB devices (different brand and model)?
What is the security enhancement implemented in BIOS 149 that you do not want to lose if you roll back to BIOS 148?
F10 seems even more erratic. Even the two attached SSD devices don't show up all the time. Sometimes only the first devices appears, sometimes both, and sometimes one of it has a strange label.
In the BIOS' boot device order setup, however, everything's OK.
Can someone with BIOS 149 confirm or disconfirm?
dWe created a lab with our Intel® Desktop Board DQ87PG, Intel® Core™ i5-4670, and 1 memory stick plus Microsoft® Windows 8.1. We got the same issue with the BIOS version 0149 with the F10 option.
Then, updated BIOS to the latest version 0152 with the recovery method and the problem disappear. USBs, Hard Disk Drives and Solid State Drives are available pressing F10.
Bios file: PG0152.BIO
Be sure the Legacy Boot, UEFI Boot and Boot from USB options are enable on the Boot tab. The USB Legacy needs to be enable on Devices tab.
Please try with your system and let us know the behavior.
BIOS 0152 didn't solve the problem for me.
I have Legacy Boot and Boot from USB enabled, but UEFI Boot disabled (because I don't have any UEFI boot sector).
The proble is, that none of my devices (neither the SSD devices nor any attached USB devices) will show up - so it isn't a USB problem, but a general "devices don't show up" problem. Instead of the devices, I only see one line saying "IBA GE Slot 00C8 v1403".
Of course, I did load BIOS default settings in 0152.
Here is what I've changed from the defaults:
Legacy Device Configuration
Num Lock: DISABLED
Secondary Power Settings
Wake on PS/2 Keyboard from S5: Alt-PrtSc
UEFI Boot: DISABLED
Startup Sound: DISABLED
Internal UEFI Shell: ENABLED
Boot Display Config
Display F12 for Network Boot: ENABLED
Display CTRL-P for IntelR MEBX: DISABLED
The bug seems strangely related to USB.
As mentioned, I have two internal SSD devices (Port 0 and Port 1).
Without any USB device attached, F10 says just "SATA Port 1". With an USB thumb drive or an external harddrive with USB connection, F10 says just "SATA Port 0". with both USB drives attached, F10 says just "IBA GE Slot 00C8 v1403", which seems to be the LAN device - a device I've configured "disable".
Strange. And there is always only one line with F10!
This may have nothing to do with the problem that you have encountered, but note the following:
I noticed that, in the release notes for the just-released BIOS for the DZ87KLT-75K board, there was an entry saying that a bug was fixed that caused some devices to not appear in the list (unfortunately, the entry was that terse). This same entry was not in the release notes for the latest BIOS for the DQ87PG. Now, I have seen cases in the past where the release notes did not have entries for all fixes included. There is a possibility that this latest BIOS has this fix. I would try it. If it doesn't, there is a likelihood that a BIOS is forthcoming that has this fix...