how old is the laptop? if it's more than 6months the onus is on you to prove it.
If it is under six months I would just copy the relevant parts in and email him, saying he has a legal obligation and you will start a paypal claim, if in doubt about what they will do file a claim before the cut off point.
• If a consumer chooses to request a repair or replacement, then for the first six months after purchase it will be for the retailer to prove the goods did conform to contract (e.g. were not inherently faulty)
After six months and until the end of the six years, it is for the consumer to prove the lack of conformity.
If it is under six months I would just copy the relevant parts in and email him, saying he has a legal obligation and you will start a paypal claim, if in doubt about what they will do file a claim before the cut off point.