Khong xem duoc file.chm??

Dear all!! may tinh minh mo file co duoi .chm lai ko xem duoc??? minh xem cac tai lieu cua Thay dua ve mon lap trinh WinDown de lam bai tap lon. ban nao biet cai nay giup minh voi.thank's so much!!

Ban kiem tra xem file hhctrl.ocx (trong thu muc Windows\System32) co bi hu hong khong, kiem tra bang cach
Star --> Run -->regsvr32 C:\windows\system32\hhctrl.ocx
Xem thong bao Dll Register Server co dang ky thang cong hay khong?
Neu thanh cong thi ban chay lai file CHM xem co duoc khong?
Neu chua duoc thi ban len google search de down file Hhctrl.ocx thay the (nho du`ng du'ng version vd: XP SP1 la version 4.73.8412)
Xong chep de len file trong System32, roi dang ky lai nhu lenh tren. Neu thanh cong nhan nut OK.

Link Search file hhctrl.ocx tren google
http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=down+file+hhctrl.ocx

Suu tam