Agree sounds like th Hard Drive has failed, a drop normally takes out the drives. So no surprise you are seeing this. Try find out what make of drive you have and go to the makers site and get their test tool for the drive and if it fails the tests, backup any of your data that you need first then do the full low level format or clean format it states on the testing disk. After that it should tell you again if the drive has failed or not, if it fails again you need a new drive. Be happy you didn't crack the screen, hard drives are one of the easy things to replace.
You need a picture of the other side of the hard drive, you can find the info too in system properties > Hardware>Device Manager > then click down to > Disk Drives and take down the name and number of the drive.
The problem with that picture is it is not giving the makers name or the product code, there is a sticker on the other side of the drive that will have all that.
awsome...thanks very muck...just goto find a place to get my hd.. and fit it...will i be able to take any stuff of old hd like the backup files or anything like that...John

Western Digital Scorpio Blue 750GB.
Hey John, right above is the HDD you have, l assume you made a couple of backup DVD's when you first got the laptop? If not download a legal copy of the relavant Windows 7 OS (ie 32 bit or 64 bit).
1. Do you have the recovery disk?
If not then.
2. If Win 7 then download this legal iso of windows 7 http://www.mydigitallife.info/official-windows-7-sp1-iso-from-digital-river/. Select your flavour 64 or 32 bit.
3. Use Windows 7 USB/DVD Download Tool to create a bootable USB stick (8GB to 16GB required).
4. Once installed use key on bottom of laptop.
5. If none of the above is doable then l suggest Ubuntu 12.04/Kubuntu 12.04 or Linuxmint as alternative OS's.
Place you old HDD into the caddy below or a caddy you can get your hands on, once done connect to laptop and see if you can get the files off.
Lian Li EX-10QI 2.5" External USB3.0 HDD Caddy.
If you are unable to get the files off, there are companies that can, however it does cost
Regards.
C.
grab a 4 to 8 gb low profile USB stick, fling Linux Puppy on it and you are good to go.
Sweet glad you found a solution, you can still use your Acergrab a 4 to 8 gb low profile USB stick, fling Linux Puppy on it and you are good to go.
Puppy Linux.
You can then use it as a backup for surfing/documents/YouTube etc.
Or
Break it up for bits to sell
Regards.
C.