Following various crashes, I entrusted my laptop to a repairman who advised me to install an SSD. I followed his advice, and asked him to give me a disc, and now my computer has a 340 SSD from Transcend (it was the cheapest on the market, and I have no technical requirements special). I am delighted to have found a computer that boots in seconds, and that I can now use the latest applications. I recommend this product to anyone who does not want to entirely replace their computer, but want to make it powerful and fast again cheaply.