Have you tried turning it off and back on again?
My g700 was doing bizarre things every time i either allowed windows to sleep, or unplugged/replugged (or just "jiggled" the plug enough to interrupt the connection) the cable... and then one day i noticed it wasn't happening anymore (on sleep, haven't tried messing w/ the cord, since it's working how i expect now). No idea why!
... It's not the mouse, it's windows. I know this because I can still press them in the Logitech setup software to assign them to functions. It's just that windows is refusing to recognize those commands now for some reason.
It could still be logitech's software only working within itself, and it could be that windows is refusing to recognize whatever, because the logitech stuff isn't sending what windows expects to interpret...
(*disclaimer: i didn't mean to seem like i was defending windows... lol)
Well, what's weird is that they were working fine when I first got the mouse and I didn't even have to install the logitech software. Then it just stopped. But the button presses do work in the software when you actually press them. That's not going to happen if the hardware doesn't work. So its definitely something that happened within windows. I will try unplugging it, and maybe putting it into a different USB slot so windows has to re-recognize it.
Huh. Well, assuming the hardware didn't break (doesn't seem to be the case), we can assume that the same signal is being sent from the device, whether logi-driver or no logi-driver. If the logitech software correctly recognizes the same signal that windows spontaneously stopped recognizing, i'd guess something is indeed wrong w/ windows (which isn't all that strange!).
Do you have a lot of other usb devices?
Did any M$ updates happen around that time? A power surge/flicker perhaps?
I think the re-recognition on alternate port is a good troubleshooting step. If it works, it might have been just a random gremlin. If it doesn't... it might be the whole usb channel on the mobo, or perhaps windows' usb functionality went weird for some reason, or only on specific ports (such as perhaps a power issue while an important file was active or being modified). It could even be some strange effects from a rogue or zombie process, interfering w/ how windows communicates with the mouse and/or usb devices, and/or the logitech software (is it intercepting the signal prior to OS, or is the OS delivering the mouse signal to the logitech software?) which somehow doesn't affect the logitech software functionality.
Part of the issue of mine, was that, after awakening or replugging, it would show the correct profile and binds set in logitech software, but when i'd either middle click, or use my relocated middle click thumb button while
not on the logitech software UI window, it would open windows search... which was not visible in any of the settings i could find. My settings showed middle button and thumb button should be middle click, but it was doing something else. It might have simply been loading the wrong profile (g700 has a default "productivity" profile w/ some different binds... and you can only use on the fly dpi-shift in wired mode), although i'm not sure why that would happen, because i pretty much exclusively use just one, and pretty much never use the productivity settings.
For what it's worth, i've also had some occasional issues w/ my wireless 360 controller
receiver spontaneously going weird (which could indicate a windows usb issue, or a usb power issue), and having to either reboot or re-discover the hardware... the wireless receiver would go wrong, but it would still work automatically w/ the play and charge cable (which i almost always use, since my battery pack no longer holds a charge for more than an hour of gameplay).
Of course, this is all just speculation and anecdote, and may be entirely irrelevant to your particular issue.
If all else fails, reboot, test, uninstall/reboot/reinstall, reboot, retest. If it's still messed up, try any other usb device in the same ports your mouse was not successfully using, to verify the ports work with other devices. If none of that works, scream at it a few times, then go smoke a bowl and forget about it for an hour or so, then go reboot and check it again (lol).
If it refuses to cooperate,
gently remove the device from the system (both hard and soft), store it somewhere safe and out of sight, and take another break. Then contact logitech.
