fwiw, I had 2 WD 2.5" SATA drives fail on me last year, one after about a month's use, the warranty replacement didn't even make it past the first day! These were confirmed as controller failures (the disk's onboard controller, not the PCs). Both were from a very reputable supplier and each had serial numbers different enough for it not to be just a bad batch - supplier ensured this (unless it was a very big bad batch !!). A third (non-WD) disk is still running fine after 8 months.
WD has a downloadable diagnostic tool called "Lifeguard" (michaelk referred to it) which is available as a bootable CD image (this
should get you to it) - if it really is "bad sectors" then it won't fix them but at least will help confirm the problem.
But, as has been hinted at, if this has happened on the same machine with a previous hdd then I'd be seriously suspecting the machine is causing the problem. Make sure you retrieve what data you can and plan to buy a new laptop. Also not the first Acer I've seen develop terminal issues soon after warranty expiration. btw, the only reason I replaced the disk in the first place was to get a bigger disk - no failure on the original.