Default Disgo 9104 Tablet Password Bypass

I have bought a second hand Disgo 9104 tablet on a well known online auction site.

The tablet is password protected. I had assumed that like with most tablets, it would be possible to boot into recovery mode and perform a factory reset.

There doesn't seem to be any method of booting into recovery mode though. The tablet is not seen by ADB.

Can you think of any solution? Thank you for any help offered.