Product care is one of the biggest fixes in UK retail... Go around the problem if a quick and positive resolution is your desire.
Make as much noise as possible (those who shout loudest and all that). Don't make the mistake of solely pursuing the retailer and when you need to, go for the throat of the computer brand itself.
I had a problem with one of the biggest computer outfits on the planet, when I spent £2500 on a notebook, that's CPU, burned so hot, it warped my screen within two months of purchase. I went back to the Bangkok based seller and outlined my case for a replacement item. Their laws on such things, are less customer friendly than the protection, we consumers get over here... Very little hand holding and somewhat Darwinian.
I took the retailers refusal on board and made a number of approaches to the technology editor at a prominent newspaper... I approached him with a mixture of humour and righteous indignation, outlining my disgust at how this product was represented in Thailand and how best to deal with the situation.
I got the direct line phone number and email for the boss of the actual computer brand, who's products were not being adequately serviced (not the retailer). Within 2 days i got a brand new computer with a slew of apologies from the shop... I also was asked my the boss of the brand to never contact him again. :)
Be bold, tenacious, fair and gracious. Nine out of ten times, you'll get what you want.