Minecraft Forums

I don't know how to fix this and already tried deleting all of my minecraft related files and redownloading. there are screen glitches such as flashing, hotbar visual glitches, the buttons in options flash, and sometimes my nametag flashes on the screen. its not my display or account because It doesn't show up anywhere but minecraft, and I tried my friends account on my computer and it still glitched. Can someone please help me out