Connect an external USB keyboard and try that for a while. If the issue also occurs with the external keyboard, then the issue is something in Windows or driver. If the issue does not occur with the external keyboard, then it's a hardware issue with the onboard keyboard and it may need to be replaced.
Dear reader, Howdy from Texas! Good evening. My name is Christopher. I am hoping that you could help me ascertain issues I've been experiencing with my beloved, floor-model G3 15 3590. I will not need the help of a live tech agent, though I have spoken with many Dell tech support professionals for various reasons. This problem simply would not be solved with a phone call, as it concerns diagnostics from user input. I seek the root of the issue and wish to learn how I might fix it before it becomes more troublesome. Let's get into the details. Thank you for your time and consideration. Please excuse me if I misspell certain words containing "T" and "Y" or the use of Caps lock. These keys seem to skip over inputs and double up on them. I take good care of my keyboard. I have actually had my keys cleaned and motherboard changed twice by Dell through Geek Squad when it was in warranty because my former roommates destroyed it by pouring water into it while it was powered on. First visit was great, but the new motherboard lacked HDMI compatibility. Second time I sent it for warranty, they gave me a new motherboard that is poorly integrated, so my computer cannot handle games like it used to. I wanted to take it back again, but going to Best Buy to repeat this process was getting expensive. I settled for this new motherboard at the expense of performance. I had no choice but to let my warranty expire before I could get it back to the perfect beast it was originally, where I could game and watch livestreams with a monitor plugged it. All that device history is for important context, but maybe you could provide for me information on my options to help me with that too. Secondly, I need help determining the nature of a keyboard issue I'm having. Due to the progressively increasing glitching, I cannot decide if this is a mechanical failure or a software issue. My Caps lock, Tab, Left Shift, T, Y, Backspace, and some F Keys randomly stop working for a time, sometimes double up on inputs, then resume functionality randomly. The keys I use the most, such as Space Bar, W, A, S, D, Left Alt, Esc, Tilde, Enter, all good. It took me a long time to realize that it wasn't just happening to me when I run games on this device, notably because the issue is getting worse. The keys seem to lag out, like input lag in a video game, hence the random ceasing of functionality, then the doubling up. I test this now extensively using the Caps lock light. Due to ignorance of the origin of the problems, I found this article by Dell just today on the subject. This seems to pinpoint the problem I'm experiencing precisely, but I'd like some advice before I attempt to troubleshoot more myself or make a purchase to fix a mechanical problem that might not exist. All my drivers are up to date, like windows and Nvidia. I have tried tweaking settings. I require more complex information about the nuances of these issues. Please help! Thank you for your time and consideration! :3 Your fellow, passionate tech junkie, -Christopher
G3 15 3590, simple troubleshooting assist and Diagnostics