[wubi] Ubuntu 12.04 and 12.10 live cds keep ejecting before installing.

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http://ubuntuforums.org – I have an hp pavillion g6 with amd-3400m apu. I recently had to do another recovery of my windows side and reinstall everything. this has happened once before. But this time when i try to reinstall ubuntu 12.04 or 12.10 as a program within windows, it will eject the cd and tell me to remove media and reboot after clicking install inside windows. when it reboots windows just starts up normally. I installed both cds before with no problems, (and they were both the 64bit amd versions), the md5 checksums are also fine like they were before. I would try a later version on cd but i have no mor (Hardware)