Dell — MS programs

Address:	Nagpur, Maharashtra, 440015
Website:	microsoft

Ms programs like ms outlook, ms word and ms excel are not working properly
1. Ms word does not save content entered
2. Mails from ms outlook gets deleted without any command given
3. Excel is also not working properly

All the three programs tittle bar entitles :
Product activation failed

While opening ms word the following message appears:
Microsoft word has stopped working.

On second attempt to open it the following message appears:
Word failed to start correctly last time. Starting word in safe mode will help you correct or isolate a startup problem in order to successfully start the program. Some function may be disabled in this mode. Do you want to start program in safe mode?

When we click yes, the word doesn't operate while when we click no the data content does not get saved.

Do reply with a solution for the above issue.

We have recently purchased dell window 10 pc.
Our pc details are as follows:
Model :dell 3059
Cpu : c13-6th
Ram : 4 gb
Hdd : 1000
Odd : yes
Graphics : intel hd
Os : w10 +ms