hi im a total newbie that just installed linux mint cinnamon from usb.
when i stated it first time i got grafic fail message it said x-file fail there is a problem whith your grafic interface. i entered some command i dont remember now from some forum and i managed to start up. but now my screen is glitching and pixels are failing.
i tried lots of commands from forums around but it seem like maybie i need other commands for differnt computers? only used windows before so im a bit lost

im using a acer aspire V whith Radeon HD 8750

You cannot type Windows commands into into Linux and expect anything to happen.
Linux, strangely enough, only accepts Linux commands.

On the first boot of the USB to get you a desktop and try out Mint, did you get any problems?

Did you try to proceed and install it to disk?

It seems possible that your download to your USB may be corrupt.

yes. i have installed linux and the commands i tryed where defenetly for linux mint also.
when the install was done i got the message x-file corrupted there is a problem whith your interface
so i tryed some commands i found in other threads here and managed to start up linux
my problem is that my grafics are
stange now, pixels are moving around and some stuff is unreadeble
i also tyred to swith betwen the different drivers in the systemsettings but no differens
any suggestions?

Posting some information on what graphics card you have would be a starting point.

If you don't remember them that means you can't tell us and so there is no way for us to know what they were, is there?

That is not the best way to solve the problem. Since you are using Linux Mint, a good source of information would be their forums, google can help with that. Mint is based on Ubuntu so Ubuntu forums would be a good source of information. The problem anyone will have trying to help you is not knowing what happened. The more detail you can post about the problem, warning and/or error messages and exactly what you did and the result would be good. It would be a good idea to take notes when you are trying to learn something know just for situations like this.

okej i will try to keep it cleaner

my grafiks card a AMD/ATI richland Radeon HD 8450G prog-if 00 VGA controller
and im on a laptop Acer Aspire V5 552g

i got this messegae when i started up linux and i found a command when i where googeling the problem but when i got it started the grafics where fuckd but i can still use it
i tried commands like

sudo killall Xorg
sudo Xorg -configure
sudo cp /root/xorg.conf.new /etc/X11/xorg.conf
sudo reboot

and

sudo Xorg -configure
sudo cp /home/mint/xorg.conf.new /etc/X11/xorg.conf
sudo reboot