Some keyboard keys not working!

[GabrielCabria]

I recenly built my PC so is fairly new bu a few days ago, while I was typing, my t key, my delete and my right arrow didnt work. As im writing this, I have to copy and paste the t key which makes writing so hard specially witought delete. I checked if there was anything under the keys but it was all clean and clear.

 

[BringerOfTea]

and the leyboard is also "brand" new? what make is it?