I had a processor meltdown about a year ago because the cooling system was bad. The technician who worked on my laptop had to replace the i5 processor with an i3. Now I want to upgrade it back but then someone said it's impossible to upgrade the processor. After the laptop was repaired, the battery life took a major hit and now lasts for only 8 minutes at most (I don't know why) but asides from that, the laptop works just fine. Anyways, I'm wondering if an upgrade is possible for this particular model or if the first technician messed something up and I'd just be better off buying a new laptop.