How do I stop my keyboard double typing or not typing b's, n's, spaces, and the shift key not working for uppercase b's and n's, and also question marks?

Basically, my keyboard has started bugging out whenever I press certain the b, n, and space keys, with the shift key refusing to make b's and n's uppercase, as well as not letting me type question marks. Its sporadic though, and it'll work sometimes while not working for a solid minute other times. I have a feeling it has something to do with my computer getting a but too warm, (a problem I've had before, but never experienced this symptom), but I have no clue. I don't know if I have to uninstall and reinstall the drivers, or what, but I hope someone might be familiar with this glitch, since my dad says he gets a similar problem with his old brick of a computer.
[I edited this paragraph of course, so I'm going to write about beans to give you a better idea of my suffering.]

I like bbeans beans are great. They smell kinda funny,and I don't like em' canned, but they're finne in burritos. aked beans, right? not like,canned beans inn sauce, (canned bbeans are gross, imo) bbut that bean paste stuff. It's reallygood if you spreadit onn thetortilla before you put in all your ingredients.Then I like to put mine in the oven for a bit to melt all the cheese. Of course, I don't put the vegetables in yet, I do it after I toast the meat annd cheese in the burrito. And then you add your lettuce, your salsa, your guacamole, and whatever else youlike in your bburrito.Hell,evenn your pickles if you're kind a freaky. No hate, justconnfusion and slight disgust. Anyways, bbecause this goddamnn keybboard is acting surprisinnglywellso far, I'm gonna repeatedly type beans like I'm stark ravinng mad.
EASEAS EASEASEASEASEAS... never mind. Imean, sometimes the B annd N keys work,but Iguess theydon't feel like it today. (I used capslock to get those ones uppercased,which still works for whatever reason.) Ah, and side note, my left and right keys bugg out too.

Anyways, enjoy your burritos my dudes. Please help. QwQ