|I found some laptops that would suit you from the John Lewis website.|
These ones are good if you want a big hard drive, the AMD A4 series are new so they will be near core i3 performance and they come with ATI graphics and these will suit your needs and they do the same thing intel turbo boost does, when the computer needs it, it will overclock the CPU to 2.5 GHz.
http://www.johnlewis.com/231577628/... for red.
http://www.johnlewis.com/231577623/... for silver/grey.
http://www.johnlewis.com/231577578/... toshiba, smaller hard drive.
The one with the I3 has a second gen CPU which came out last year, i have one like this but it is clocked 100MHz lower, this CPU is good as mine can play games and do all sorts.
Look at these, see if you like them.
The thing about you current laptop is that it needs a new OS (Windows), windows 7 costs around £100.