It is not at all normal for a tablet to take minutes to start. Something is clearly wrong, but I'm not sure the solution is a bios update. It does not happen in all the units of your model, so it seems a specific problem of your tablet.
You can flash the bios with the published one of your tablet, but you have to be careful since it is a risky process that can be done in brick. If for the conditions of the sale is still under warranty, open a ticket in the seller to try a change or refund |