USB Stops Working, Hardware or Software Issue?

I am having a strange problem with my laptop. It's a Dell Latitude E6410. I noticed this problem for the first time yesterday.
Whenever I'm home, I plug in a USB keyboard, USB mouse, and sometimes my PSP to charge or add files. All of this normally works. Yesterday, I was deleting everything from my PSP hard drive, and in the middle of doing so it just disconnected. I noticed that my USB keyboard and mouse stopped working too, my mouse didn't even have the laser lighting up on the bottom. I restarted and everything was fine.
Last night I put my computer on standby, and just now I woke it back up. Upon doing so, none of my USB devices were functioning again, and I had to restart my laptop and that did fix it.
My confusion is whether this could be a software issue or hardware issue. I've never had an issue like this before. I notice that my mouse doesn't start working and my PSP doesn't start charging until after Arch starts to boot, so I wonder if there is a daemon that might be dying or something?
My laptop is under warranty so if it's a hardware issue I'm covered, though if I call Dell tech support I'll have to put my Windows hard drive in it (which I keep just in case I have to call tech support) but I thought I'd ask here before I go through all that.

lilsirecho wrote:
Perhaps it is a software issue since it occurs after putting the laptop in standby.
Some BIOS programs have a legacy USB entry. Perhaps that needs attention for whatever reason.
If on internal power, low battery charge could introduce discrepant behavior. This is not likely if on wallwart power.
Review recent upgrades for clues to the solution.
It doesn't happen only after standby. The second time it did, but the first time it happened right in the middle of transferring files from my PSP.

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