I would also say that this doesn't really sound like a HDD related issue.
Yet, if you think that there is something wrong with it, you can just test it: http/www.tomshardware.co.uk/forum/282651-32-best-diagnostic-testing-utility
If there is something wrong with it, you need to back up the data stored on it.
That doesn't sound like your hard drive is the problem here. Couldn't find much info on your laptop but I think your crash may have something to do with low ram. Could you post the memory dump? That would probably help isolate the problem.
I would also say that this doesn't really sound like a HDD related issue.
Yet, if you think that there is something wrong with it, you can just test it: http/www.tomshardware.co.uk/forum/282651-32-best-diagnostic-testing-utility
If there is something wrong with it, you need to back up the data stored on it.