MSI GE62VR 7RF Apache Pro laptop Keyboard Q & R key issues

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Let me explain the situation.

I've recently bought this from my lad as a project to fix. I do think it is failure due to being hammered gaming. I knew it prior to obtaining it.

I stripped it and cleaned the fans. A new treat of thermal paste(it needed it! It was crumbling). All good on that side. Stress tested fine. Temps sorted.

The issue is that when you first boot up(Windows 10 Home) you cannot use the letters Q nor R. No response. I log in then go to google and after press , press, press Q amount of times(maybe 20) it will respond. Q will eventually react then R will. It is slow at first then acts normal for a while.

If I hold FN key then hit Q. It will act normally. The same goes for R. Instant. regardless of the above. Log in, too.

If I toggle between W+Q or T+R quickly. Normal. Pressed in that order.

I'm thinking a broken trace/wear n tear or something along those lines the way it is acting and only a replacement keyboard would suffice.

I've done driver update path.

Commands from CMD

Troubleshooter.

Replaced the physical Q and R keys with replacements, fully. I've also cleaned the contacts with PCB cleaner. It was slightly better after this. Not much, though.

Any insight welcomed.
 
I had a similar issue on an old dell when the ribbon cable from the keyboard to the motherboard wasn't fully seated.
Did you remove the cable when cleaning the contacts?
 
I cleaned the contacts when removing the keys externally and replacing the keys that I purchased via a well known auction site via buy it now.

No removal of the ribbon cable as it is situated under the motherboard, but I was hoping to avoid going deeper than the fan clean/ heatsink removal and repaste.

I think your suggestion is the only other valid thing I can entertain other than a full keyboard replacement which I will likely will not do.

I'll ponder it for now as it is just a backup and not getting used. I'm off work at end of the month for 10 days so I may make it a project to fiddle with over a few days in a relaxed manner..

Cheers for the input
 
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