Hello and welcome to the forums
Can you tell us some more about your graphics hardware? You can use the 'lshw' command in a terminal
No need to copy it all - the important parts are the product and the driver e.g.
For your account issues you should start a separate thread in the 'Resolution Center' subforum
$ lshw -C display
WARNING: you should run this program as super-user.
description: VGA compatible controller
product: G84GLM [Quadro FX 570M]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:01:00.0
width: 64 bits
capabilities: vga_controller bus_master cap_list rom
configuration: driver=nvidia latency=0
resources: irq:16 memory:d6000000-d6ffffff memory:e0000000-efffffff memory:d4000000-d5ffffff ioport:2000(size=128)