I have no love for Seagate drives
raw, I also had (still use as a paperweight) one of those dreaded 500GiB Seagate Barracuda 7200.11 drives, the thing was, it had less than 30 days of usage over a 5 year span. It was prepackaged backup drive & since the specs were faster than any HDD I had (a 32MB cache was a big deal at the time) & there were other backup drives on hand. After moving my backup images to other drives, carefully cracked it open, and installed in what at the time was my main PC. Ran like a champ for 4-5 weeks & then out of nowhere & with no warning whatsoever, my wife booted the PC & there was a 'no disk' error. Tried unplug/replug to no avail, and it wouldn't show connected in my docking station either, though the HDD would be spinning normally w/out any strange noises or clicks.
In fact, had just ran benchmarks on it just a couple of days before this happened, and fortunately, created a drive image with what at the time was using, Acronis True Image 2010 (full version). While that did save much of what was on the drive, for a spell, had to go back to the other, until I could get a 1TiB Caviar Black (SATA-2, 32MB cache). I wasn't about to spend more cash on all of the needed components to homebrew recover the drive than I paid for it new on eBay & pray that it worked.
Seagate produced millions of these drives, knew that some were defective, and didn't warn users to update firmware in advance to head off the troubles. I had registered the drive on their site & can say with 100% certainty that I never received a notice to do so, even when it was a backup drive. Just last year, purchased a 1TiB model of the same that shipped with my XPS 8700, yet it was bundled with a 120GiB Samsung 850 EVO for $99 shipped, it's ran good, half of the drive space is my Linux Mint /home partition & as for the 850 EVO, it's staring me in the face looking for another home after removing a couple of smaller SSD's in the main PC & going with two larger models.
I guess because I had imaged just before the Barracuda 7200.11 died, wasn't out of as much as many others were (one's data is worth more than the drive & OS combined), there were many who lost everything. Yet I have to place at least half of the blame there where it's rightful, the owners of the drives. Though this one had a much higher failure rate than other at the time, it was their failure to image the drives that led to loss of data, and that can happen to anyone of us as soon as 5 seconds from now. Hardware fails & we must be prepared for these events. Today is different from then, backup drives are at all time lows in pricing (seen a 1TiB model on Newegg today for $45 on promo), and quality backup software costs nothing, Macrium Reflect is what I use, except for one computer that doesn't run a SSD & that's the ATI 2010 version mentioned above.
Hopefully all the OP has is a HDD failure, these are at low cost on the Newegg site, around $35 for a 500GiB model. It makes little sense to pay just $5 less for the 250-320GiB versions, and in many instances, will pay more. Best to purchase on promo, or go with a $59-69 120GiB SSD. More bang for the buck!
Especially on a netbook that likely holds 2GB RAM at the most, an SSD will likely be the best upgrade that can be performed. Crucial has some decent 128GiB models in that price range.