Help TF300T stuck on boot

[WinC74]

So, I was on my tablet uninstalling a couple of games (Plants vs Zombies 2, Angry Birds, etc.) since I no longer played them. Now, after that, I decided to browse the Play Store to check for apps and stuff. While doing so, my tablet decides to shut itself down and rebooted and that's where it stopped working...

Now it's stuck booting and I tried to reboot (power + volume down), but that didn't really help. So what can I do and why did this happen? I'm running the latest update as well (Android 4.2).