|It appears you somehow deleted an extended partition that contained your logical drives d & E. I can't speculate how you did that. The data should still be there if you haven't been overwriting by downloading anything. Best to not use that hard drive any more than necessary.|
You can try running testdisk on the drive to try to rebuild the original partitions. You will need to know more information than you have provided to us. You need to know if the other partitions were primary or logical drives in an extended partition. You may also need to know the capacity of each of them.
At any rate you should read all the tutorials for testdisk BEFORE attempting to use. link to testdisk immediately below.
If you have another hard drive I think Wizard Fred has a good suggestion.
In the mean time download the portable version of recuva and run it from a flash drive to see if recuva sees all your missing files.
Get recuva from the link below.
You can also explore other resolutions from the hits in the link below.