i re-install my hard disc but on that time is loss my mx-excel ,word so how cal get back

[Cnd73699cs]

I changed my hard disc but I loss my mx excel, word how can I get back 

[Hibb1]

Your MS Office license is PROBABLY tied to your registered email address. If you download and install the version you had, when you activate it with the same email address it should work.

Otherwise log into your microsoft account and it'll tell you what software you're licensed for. If office is there, choose it and it'll install.

[TheOldMan]

It would be helpful if some additional details were posted.  The statement "I changed my hard disc" - please explain what has been done.  It you still have the hard drive and it is intact, then getting the MS Office and any data should be possible.  If by the title of the thread it means you reinstalled Windows and  it might be in the Windows.old folder  if you have one.

[Cnd73699cs]

first my hard disk(1TB) getting "error 301" i show in shop they told me replace new hard disk so i replace my hard disk(500GB)

on the time they give install one os to my pc but chat with my hp support they they give my original windows 10 os to my pc on that i didnot check my ms office ofter some days i open my word there there show bye new ms-office i am try to chat hp support but there are not conneting to agent so how can i get mt ms-office please tell.............

[TheOldMan]

Since there is a repair shop involved, it might not be as easy as if you had done the work yourself.  Try the methods outlined in the post by @Hibb1 .  If those do not provide the information, then look for any paperwork that should have been with the MS Office when it was purchased.  If the old hard drive is still available, it might give up some useful information.  I will not go into details on that adventure unless the old hard drive is in hand.

If none of this provides results, it might be necessary to purchase MS Office again, or use a near like product: IE LibreOffice

https://www.libreoffice.org/