Unreal Engine is exiting due to D3D device being lost. (Error: 0x887A0006 - 'HUNG')

Most of my steam games are giving me problems now. Crashing, giving me fatal errors left and right.

One error is this:
create_index_buffer:CreateBuffer failed.HRESULT:
2289696773=DXGI_ERROR_DEVICE_REMOVED:
GetDeviceRemovedReason() = DXGI_ERROR_DEVICE_HUNG

At
“F:\BuildAgent\work\1358eaafe6731564\runtime\d3d11_render_de
vice\d3d_geometry.cpp:266”

Another error is this:
Imgur

Another error is this:
Imgur

Just what on earth is happening? Is there a solution yet???