Aside from my laptop, I also have iPad and iMac. Among the three, I prefer to use my laptop because of its portability compared to the iMac, and its functionality over the iPad. I keep a lot of large files (mostly pictures) in my laptop which might be the reason why it does not boot up as fast as it used to. Lately, I have been cleaning up my computer by removing junk files, deleting internet history, uninstalling programs which I do not really need or use and even deleting files. I have also tried defragmenting. Any advise on how to speed up my computer ?