Instead of creating another topic for the same problem you can reply to the clarification request that you've already received or continue reading.
Since you are still reading, you probably do not have a Microsoft or Mac wireless mouse as they would install automatically.
One trick you can use it that if your system is asking for your to supply the software on a "New Found Hardware" pop up box when you boot up to your Desktop then, select 'check on internet/online (or Windows Update)', this process usually works pretty good.
Otherwise, I believe I'm correct in concluding you have a Logitech wireless mouse. You can visit Logitech.com and they're cordless mouse software by clicking this link
. Then, choose your OS and start the download, once it starts select RUN and it will install automatically.
If you find that this solution I have offered to you fixes your problem PLEASE click on the Fixed button below.
Thank you and if you have any further need for help please do not hesitate to Ask Me by clicking on my user name above.