If EasyPHP
was installed to another drive then your system drive (C:
is usually your system drive and D:
is your storage drive), you just need to install a recovery software.
NOTE: It is very important not to write/delete/copy on that partition/drive. Otherwise your information might be lost!
I usually take the drive out, install it into another PC which has every software/windows service disabled that could write on that drive. Example: windows update, windows system restore, virtual memory, superfetch, antivirus, etc.
LE: Don't forget to always backup your files if you are working on something important. I do daily backups and store those backups on another PC. If the development PC crashes in some way, I always have the backup from yesterday.
Take a look at this link.