On one of laptop (HP 2570) after showing custom background DE screen laptop freezes up to 10 minutes then login windows appears and we can log on.
It is possible to change this behavior (all other laptops works fine)?
You'd need to work out what's "special" about this particular laptop - since others work fine, there must be something different about it - maybe it's using an older BIOS/UEFI version and needs updating?
You've not really given enough information for anyone to help you - if you have two laptops, the same model, and they behave differently, then there is something different between them. You need to work out what that is and make the one which doesn't work properly the same as the one which does.