first time logging on to gw2 and keyboard and mouse controls not responding (pc)

The most common cause for that symptom that I've seen show up here has been trying to get by with using a low end laptop without any discrete GPU.  Intel's onboard video chips can't do the job. 

Plants vs. Zombies: GW2

MINIMUM
OS: Windows 7 64-bit/ Windows 8.1 64-bit/ Windows 10 64-bit
CPU: 3.20 GHz Intel i5 650/ 2.5 GHz AMD Phenom X4 9850
RAM: At least 4GB for Windows 7/ Windows 8.1/ Windows 10
Hard Drive: 20 GB
Video: NVIDIA GeForce GT 640/ AMD Radeon HD 5750 (driver conflicts)
DirectX: 11
Input: Keyboard and Mouse, Analogue Controller
Online Connection Requirements: 192 KBPS or faster internet connection

@taco3357 

Your message named no system specs at all.  We offered a best guess at a reason for the symptom.  You haven't responded.  We'll have to presume our guess was a good one.