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Installed 12.10 everything went well, until after I login. I get weird graphical artifacts and can't do anything. The plus side is that I still have Windows 7 running well.

I am extremely new to ubuntu so if you could give me a hand that would be great.

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i think your resolution is problem . can you write model/brand of your computer ? – user84277 Nov 11 '12 at 17:28
you just took the worst decision about the best OS, this problem is a well known bug in Ubuntu 12.10, every user is suffering from graphics sticking and tearing and that irritating blinking and fluctuating screen. You can replace the 12.10 installation with 12.04, right now that is the only solution as far as I know, or if you have an ATI graphic card then try following my answer in this thread here. – Gufran Nov 11 '12 at 17:30
YOU DONT HAVE TO REINSTALL UBUNTU – user84277 Nov 11 '12 at 17:31
I have an HP. AMD Athlon Processor LE-1660 2.8 GHz. I have a NVIDIA GeForce 9300 GE Graphics card. – Alexander Nov 11 '12 at 17:59

That happened to many other people that I know and they just reinstalled , I get weird colors , I get Purple , Then Black , Then A Gray , Then Black and then Desktop ussually , I find it normal being the colors for Ubuntu and GRUB , so I let it be ,

I would recommend you running Windows 7 and try either options

  1. Download the Ubuntu Wubi.exe installer on Windows 7 like you did the first time most likely and re-install Ubuntu and it will replace the old copy.

  2. Download the Ubuntu 12.10 .iso file , Put it on a USB (Fully Empty!), Then Extract it by Right Clicking and Click "Extract Here" , Then shut off your computer , Then when turning on (FOR a HP , Click ESC , Then F9) So either ESC or F9 , You will get a list Ussually Hard Drive CD ROM Drive USB Flash Drive Here (Generic , SanDisk , Many names for it)

Click the Flash Drive and you will get a Ubuntu Desktop and it asks "Would you like to install Ubuntu?" Then you follow the steps and it will be installed and replace the old copy that you have.

If either fails , Look online for other options , I hope I helped you a bit and I can help more if you need further guidance , I am also new to the System but I have previous information about windows so Ubuntu is just a new step, Learn it , Then nothing is hard for you!

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I used pendrive linux before, but the usb was not completely empty. I'm not sure if that makes a difference with pendrive, but I will reformat and try again. – Alexander Nov 11 '12 at 17:55

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