Sudden problems with loading videogames, please help

So, for some context, yesterday I went to sleep, and my PC was being a bit loud, so I reached over, and closed it by holding down the power button. This morning, I got up, and tried to launch World of Warcraft; the game launched after some delay, and I got onto the character select screen. Once I tried to actually load into the game, however, it took immense amounts of times. I tabbed out and watched Netflix for an hour, game still hadn't loaded, and it wasn't frozen, since I could see the bar moving very slowly. I tried to restart my computer three times, freed up extra space on my hard drive, nothing worked. I tried other games as well, namely Tekken 7 and Dark Souls 3, same issues. The only game that actually worked was Hearthstone, and even then, kept freezing and stuttering. At first, I thought the games may have been using the integrated graphics card for some reason, but I checked, and it wasn't that. The specifications of my processor are: "Intel(R) Core(TM) i7-9700 CPU @ 3.00GHz 3.00 GHz". I have 16 gb's of RAM. My graphics cards are as follows; the integrated one is "Inter(R) UHD Graphics 630". The dedicated card is "NVIDIA GeForce RTX 2060". Everything other than more intensive games works fine, the PC runs smoothly, and everything loads almost instantly, including my browser. The only other issue I had was Windows spamming me with alerts after one of the restarts that my (G drive needed to be formatted, but that went away, and may have been caused when I was trying to uninstall a game, and Steam froze, causing me to force close it. I restarted immediately afterwards. If anyone has any advice on what's happening and how to fix it, it would be greatly appreciated... I'm currently moving, and I don't have the money for a new PC or any expensive components.