Decrypt files recovered from Formatted Hard Drive Windows

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Windows

Win7

encryption

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Hi,
I accidentally formatted one of my drive, most of the files were encrypted (using windows7 EFS) and some were not, I used Recover My Files software to recover file, it recovered all files and folder.

But those encrypted files are directly opening in WordPad and not human readable but others are fine, I have certificate/Encryption key (.PIX) saved in my other drive.
Please Help me how to decrpty my files.