Definately send it back to Evesham! Upgrading the bios at this stage is simply not worth the effort because it shouldn`t make any difference to the functionality of the computer. If this computer is still under Warranty from Evesham I suggest you require a fully working model before you start tweaking. Keep a record of all correspondence, dates and conversations just in case it gets nasty. Having said that Evesham have an excelllent reputation for customer service.