My existing laptop had a faulty system board - the repair cost would have been nearly £800 which could not be justified given the price of a new laptop. The item purchased from ebay had a working system board with a missing screen. The purchase gave me the spare parts for a reasonable cost and I now have a working laptop again.
It has given me a newish laptop for around £125 - at least I now do not need to purchase a new one at 5 times the cost.