unlocking andriod tablet

[Matt e]

ive got a archos 80 cobalt tablet. ive put a passcode on it and because its been so long since used it ive forgotten the code

is it possible to unlock it some how?

http://www.tesco.com/direct/archos-80-cobalt-tablet-8-8gb-wifi/247-0605.prd

 

[M26]

http://www.archos.com/manuals/A80G9_EN.htm#zzee_link_72_1312982515