update from 11.04 to 12.04 when reboot system shutdown

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when i update system from 11.04 to 12.04, after downloading and installing, system reboot, but i don't know why temperature of CPU is too high. during system rebooting, my laptop shutdown..

So update do not completely, right?

update-manager show me like this.

What can i do, I cannot update again.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.14.5
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
Uname: Linux 3.2.0-29-generic i686
NonfreeKernelModules: fglrx
ApportVersion: 2.0.1-0ubuntu5
Architecture: i386
Date: Sat Sep 22 02:43:22 2012
GsettingsChanges:
 com.ubuntu.update-manager check-new-release-ignore 'precise'
 com.ubuntu.update-manager first-run false
 com.ubuntu.update-manager launch-time 1348252944
 com.ubuntu.update-manager window-height 744
 com.ubuntu.update-manager window-width 1301
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: No upgrade log present (probably fresh install)