How do I hard/factory/whatever reset a 1.6 tablet that will not boot? I have one of those cheap 7" China jobs which I use as an eBook reader and not much more. 

Suddenly it won't start, by which I mean that I see the "BIOS screen" with the green Android robot and the OS version, kernel version and SDK version, then it shows a black screen with the word "Android" forever.

There is no software installed apart from the eBook reader, so I don't mind doing a "hard reset".

How can I bring the tablet back to life?
Did any manuals or documentation come with this thing? Is there a manufacturer's website for tech support? Look for ways to get into "Recovery Mode" which should have options for doing a "factory reset".