My Lenovo says the hard drive is full, yet I'm only using 780MB of space?

I'm not a computer genius, however I can do the basics. I bought this computer for hella cheap, $150 two years ago, and had problems from day one. The One Drive has 30GB of space, and yet 27 of them are being used… By what? I'm at a loss. I deleted Kasperskey, which made is go MUCH faster, and since only use the computer to write… That s it. I have deleted EVERYTHING I CAN delete, and like I said I only use 780MB of space. I can't even download safari or any other search engine. I'm at a loss of what to do. I also thought my computer only had 2or 4GB, but when I check out the hard drive it has room for 30… What piece of this puzzle am I missing, and what can I do, other than to buy a new computer?

What type of charger for Lenovo Yoga 720 13ikb?

It was looking like the type C charger being used for phones in pictures but I thought it might be different or I read that's just an option? *What charger comes in the box?* I'm thinking of buying a used one that doesn't come with a charger.
Providing an amazon link to the charger would be most helpful

Help me unbrick my Lenovo 100s Chromebook?

I tried to download Linux so that I could play games that did not support chrome os, but when I tried to delete it, a black screen with a rabbit booted and now I'm in internal shell terminal. I have tried ctrl + d and ctrl + c. I have also tried exit and gnu grub version 2.00. I have a usb with chrome is on it plugged in, but it has not done anything. Someone please help?

Can an MSI Geforce GTX 1060 6gb fit in my case?

Hi! I have a Lenovo Legion Y70 Cube and my GPU inside is currently a 4gb AMD Raedon 480. I recently wanted to save up to get an MSI Geforce GTX 1060 6gb but I don't know if the GPU would fit the case I'm using (the one that comes with the prebuilt PC)