android tablet not waking up
Do I just have something disabled that is preventing it from waking up?


There's no user-visible setting in Android for disabling alarms. That would kind of defeat their purpose!  The only way you can have disabled alarms is if you've rooted the device and gone around uninstalling system apps or poking at the internals. If you have, we'd need to know a lot more detail on what you've done to know if that's the cause, and the fix would probably be to flash a new ROM.

This does sound like the kind of system integration error you might find on an incredibly cheap tablet. Not quite a hardware issue, but a bug in the device's software. If it is, the only way to fix it would be to try to get an update from the manufacturer, but if you don't even know who they are, you might be out of luck.