Word won't open

You would need to run office diagnostic tool which is provided along with the office suite.

Also check the following:

Issues with starting Office:

https://support.office.com/en-us/article/Why-can-t-I-start-my-Office-2013-application--52bd7985-4e99-4a35-84c8-2d9b8301a2fa?ui=en-US&rs=en-US&ad=US

Repair:

https://support.office.com/en-us/article/Repair-an-Office-application-7821d4b6-7c1d-4205-aa0e-a6b40c5bb88b?ui=en-US&rs=en-US&ad=US

A lot of problems with Office 2013 are caused by third party (non-Microsoft) applications.  This is my (expanding) list of things to try when Office 2013\365 won’t start or crashes:
See the Article “Why can’t I start my Office 2013 application at:

http://office.microsoft.com/en-us/support/why-cant-i-start-my-office-2013-application-HA104011864.aspx
For the error message Error: "Microsoft Office cannot verify the license for this product." See:

http://support.microsoft.com/kb/2797062/en-us
Refer to the following website for information on repairing Office 2013\365:
http://office.microsoft.com/en-us/project-help/repair-or-remove-office-2010-HA010357402.aspx
See Office 2013 install woes - http://office-watch.com/t/n.aspx?a=1834
See the KnowledgeBase article “Office 2013 applications crash on launch at the splash screen” at:
http://support.microsoft.com/kb/2813143
Or see the KnowledgeBase article Error: “Something went wrong and we can't sign you in right now” when trying to install Office 2013 at:
http://support.microsoft.com/kb/2811180/en-us/
Try to run word in safe mode by typing winword/safe.
If thatdoes not helpthen, in the search box type winword --> Word 2013 will be displayed --> right click on it --> Select Properties --> Go to the compatibility tab --> Check to see if there is a check mark next to compatibilty mode.
If it is checked then uncheck it and then uncheck the option of Run as Administrator if its checked.

Now run the word

Also see my response in
http://answers.microsoft.com/en-us/office/forum/office_2013_release-word/microsoft-word-2013-has-stopped-working/67b81016-849f-481a-bce5-bf04797ac03b
Do you have Abbyy Finereader installed on the PC? A number of people have reported that removing it overcomes problems with 2013.  See:

Office programs may crash with the FineReader add-in installed at:

http://support.microsoft.com/kb/2755838

Do you have “Fun Tools” add-in? A number of people have reported that removing it overcomes problems with 2013

Do you have Toshiba Book Reader installed on the PC?  It has been reported that uninstalling that brings Office back to working status.

Do you have the Acrobat PDFMaker add-in.  It has been reported that uninstalling that overcomes an issue with a message appearing that states "The document contains macros. Macro support for this application is disabled. Features requiring VBA are not available. Would you like to open this document as a read only?"

Also see: http://answers.microsoft.com/en-us/office/forum/office_2013_release-word/microsoft-word-has-stopped-working-when-i-close/8375b5b6-4f7e-46ed-a02b-90152ecad287#LastReplyand

http://answers.microsoft.com/en-us/office/forum/office_home-word/word-and-excel-2013-crashing-on-windows-7/5389390c-e989-4c8e-8fe0-62673f1410ce?page=4#LastReply

It appears that there may be some hardware incompatibilities as well.  If you have the NVIDIA driver NVWGF2UM.DLL, try renaming it as: NVWGF2UM.oldas was mentioned in:
http://answers.microsoft.com/en-us/office/forum/office_2013_release-word/microsoft-word-has-stopped-working-when-i-close/8375b5b6-4f7e-46ed-a02b-90152ecad287#LastReply
From the File tab, select Options and then click on Advanced and then in the Display section of the dialog, check the box for Disable hardware graphics acceleration

For the error message "There was a problem sending the command to the program", use Windows Explorer to access the C:\Program Files\Microsoft Office\Office15 folder and right click on WINWORD.EXE then on Properties, go to the Compatibility tab and uncheck all the boxes.  It has also been reported that the problem can be overcome by editing the registry at HKEY_CLASSES_ROOT\Word.Document.12\shell\Open and deleting the ddeexec key.

The ddeexec can also be deleted from

HKEY_CLASSES_ROOT\Word.DocumentMacroEnabled.12\shell\Open.

That fix is described at ...

http://www.dilloway.co.uk/there-was-a-problem-sending-the-command.html It has been reported that uninstalling FastPictureView and FastPictureViewer Pro… overcomes the issue of the Minimize, Maximize, Close and Help buttons not being visible in Office 2013.

If you have a Canon 8350 printer, try using the Canon MF8000 UFRI LT XPS driver as detail in the post by Riad Amstha on April 14 in the thread at:

http://answers.microsoft.com/en-us/office/forum/office_365hp-word/office-2013-crashes-with-canon-8350-printer/e2bf6530-92e0-47ef-b6ec-e803a91793d0?page=3#LastReply

For the problem of nothing appearing when you start typing in a blank document in Word in Office 365 Home Premium, and you hear a bell sound with each keypress, but no characters appear, disable the SMARTInk add-in for an interactive whiteboard.

If none of that helps, then you might remove all traces of the Office installation by downloading the fixit from the following article:

http://support.microsoft.com/kb/2739501
saving it to your computer and then running it.

Then reinstall Office by logging into www.office.com/myaccountwith your registered email address and click Install Office.