信用憑證(+20)

My Hard-disk is divided into C:\\ and D:\\ by WinXP
At the beginning, I found that my computer 中毒
Then I use WinXP 加密 files by (Right Click>內容>進階>加密內容，保護資料)
and save it in D:\\ (NTFS format not FAT32)
Then I format c:\\ by WinXP CD

I use the same user name to install XP again but I cannot move, copy my D:\\ file back to c:\\ because 信用憑證

我試過取消「加密內容」by unclick the box 「加密內容，保護資料」
but it shows:
『 套用屬性到檔案時發生錯誤: 』
『 D:\\filename.jpg 』
『 存取被拒。』

現在怎麼辦
係咪已經冇辦法?