I discovered it's your keyboard that's causing the problem (TBH, I should've known that just from the HID name). What exactly it's doing that that's unsupported, I don't know (I do know it has something to do with the power state), as I don't quite have the expertise yet to delve that far.
I did see two drivers present in the stack for the thread here, which may or may not be involved. One is what looks to be an Intel LAN/wifi driver (dated Jan 23, 2012) and the other is an old Intel graphics driver (dated Sep 2009, pre-Windows 7). You will want to update these drivers at your earliest convenience. Grab them from the Dell website. BIOS update will also be beneficial.
If that does not resolve your problem, it's time to turn the system in for replacement. Hopefully your warranty has yet to expire. You may wanna try and persuade them to replace the laptop rather than service it, since if they try servicing it then it probably will be done 2-4 times before they end up replacing the right part. Remember to back everything up (like with Clonezilla if you want full disk image) before sending it to them, as they might end up replacing/formating your drive (which I know isn't involved but they'll do it anyways) and you'll lose your data from it if that happens.