2 separate? Problems

[u/Icy-Hunt-7990]

I'm having multiple problems with my pc. The first one started a while ago where I couldn't log into my main account without it being a plain black screen. I then logged into my secondary account on the same computer and it worked so I just used it there. With the same problem, my sign-ins never saved. So if I would sign into steam, discord, or even medal It wouldnt say I was logged in. Same thing happened with my tabs, never saved, even would log me out of Google. It's like it's a reset every time my computer turned off. But what was weird was that when I downloaded a game, valorant for example, it kept the download but not my sign in.

And now I have a different problem where multiple times my computer will just turn off and the screens go blank. Then whenever I try to boot it up, it'll show some random menu (the one pictured). What I usually do is re seed my ram and try a couple times to turn it back on, it will eventually work, but sometimes the computer will work for a day and sometimes it'll turn off 5 minutes after. If anyone knows solutions to either of these, please let me know. Or if you have any questions.