I have a ccorrupted upgrade to 12.10 how do I fix

I upgraded to 12.10 today and it was corrupted. Iam even on-line through a file on my Desktop I opened with fireFox. I downloaded it again at the library and have it on usb but can't use it to boot. I am booting I belive with an older grub. I can't rember the version I used to boot. So Maybe a frsh install off the disc if I could make it bootable?

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: unity 6.8.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic i686
ApportVersion: 2.6.1-0ubuntu6
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,imgpng,compiztoolbox,resize,place,move,regex,snap,session,unitymtgrabhandles,animation,mousepoll,expo,grid,gnomecompat,vpswitch,workarounds,wall,ezoom,fade,scale,unityshell]
CompositorRunning: compiz
Date: Sat Oct 27 14:19:21 2012
DistUpgraded: 2012-10-27 08:47:44,762 DEBUG enabling apt cron job
DistroCodename: quantal
DistroVariant: ubuntu
DkmsStatus:
 fglrx, 9.000, 3.2.0-32-generic-pae, i686: installed
 fglrx, 9.000, 3.5.0-17-generic, i686: installed
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI RV710 [Mobility Radeon HD 4500/5100 Series] [1002:9553] (prog-if 00 [VGA controller])
   Subsystem: CLEVO/KAPOK Computer Device [1558:0770]
InstallationDate: Installed on 2011-10-21 (372 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
MachineType: System76, Inc. Pangolin Performance
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic root=UUID=be7121e6-77b1-45fa-8d21-bd3db139ecb7 ro quiet splash vt.handoff=7
SourcePackage: unity
UnitySupportTest:
 Error: command ['/usr/lib/nux/unity_support_test', '-p', '-f'] failed with exit code 1: X Error of failed request: BadRequest (invalid request code or no such operation)
   Major opcode of failed request: 153 (GLX)
   Minor opcode of failed request: 19 (X_GLXQueryServerString)
   Serial number of failed request: 22
   Current serial number in output stream: 22
UpgradeStatus: Upgraded to quantal on 2012-10-27 (0 days ago)
dmi.bios.date: 03/18/2010
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: CALPELLACRB.86C.0000.X.0000000000
dmi.board.asset.tag: Tag 12345
dmi.board.name: W76x/M77xCUH
dmi.board.vendor: CLEVO
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: CLEVO
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrCALPELLACRB.86C.0000.X.0000000000:bd03/18/2010:svnSystem76,Inc.:pnPangolinPerformance:pvrpanp7:rvnCLEVO:rnW76x/M77xCUH:rvrNotApplicable:cvnCLEVO:ct9:cvrN/A:
dmi.product.name: Pangolin Performance
dmi.product.version: panp7
dmi.sys.vendor: System76, Inc.
version.compiz: compiz 1:0.9.8.4-0ubuntu3
version.libdrm2: libdrm2 2.4.39-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120913.8637f772-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3