Well the first thing is to pull the HDD and fit it to a desktop computer where you can work with it. You'll need to see if it is seen by BIOS as a drive at all and if it is when loaded can Windows see the drive and read it or more importantly the E Partition. If it is unreadable and there are no petitions showing you'll need to make up your mind as to what the data on the drive is worth as you only generally get one shot at it and if you muck it up the Data Recovery Companies have that much more of a hard time in recovering your data which you'll be paying for.
Generally speaking you can pickup a copy of X Ways Davory for around 42 Euros and that will recover the data but you'll have to fit the drive to a different computer maybe in a USB caddy and write the data to another HDD as you NEVER UNDER ANY CIRCUMSTANCES write recovered Data to the drive that it is coming off as you'll overwrite other data in the process.
If you do not mess with the drive you can get the data recovered for around ! to 3 K AU if the drive is working and anything more if it isn't or you mess with it and make it harder for the company to recover your data.
In one case where Forensic Data Recovery was applied the cost was 100 K AU for that service but it was used by the Police for a Pedophile in a Court Case so it was money well spent.
But first make sure that the drive is actually working by fitting it to another computer and try reading it or see if it is recognized at all the cheapest way of doing this is to buy a USB to 2.5 Inch caddy and plug it into another XP, 2000 or 2003 OS computer or even a computer loaded with Linux which can read the NTFS partitions.