Can't hit/shoot

[Six]

I got a new laptop, and I'm inexperienced with them in general so it may be an issue on my side of things, but just in case it isn't... I was killed by a zed the other day because when I got up to hit them, I suddenly couldn't. Though I had done it earlier, it just stopped working. In a later, separate session, I couldn't shoot when I needed to. I haven't signed back in yet to see if it's still bugging out, I wanted to come and ask here first if it's a glitch or if there's a fix before I do.

[[IFC]Mjollnir]

The game has an "auto-raise" system for your weapon when you're too close to an obstacle..sadly enough this doesn't make always sense in how it works ingame, but I expect some more finetuning in the future.
So, from what it sounds like in your description of the problem, you've been too close to the infected so the "auto-raise" kicked in...
Try to keep your distance, use silenced weapons (shooting does not only attract infected, but also other players...), use melee weapons, especcially knifes, aim for the head (if neccessary, go first person...), even fists can be good for taking out infected silently, the more when you have a canned food in your hand... or wait for the re-implementation of bow and arrow, that was my "go to" weapon pre 0.63, silent, still quite accurate on distance, easy to make ammo...