New user. Having to boot my computer twice before Ubuntu 12.10 starts

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http://askubuntu.com – I'm a new user to Ubuntu. While I haven't had many issues with the OS since I've installed it, I have had one odd problem. Whenever I shut my computer down and later turn it back on, the power button lights up and the machine appears to be on but nothing happens, my screen shows no signal. I've been having to hard boot it off and then turn it back on again to get my computer to actually work. Twice, that is the number of times I have to turn on my computer before it works and it happens every time. I haven't seen anything anywhere else about this so I'm not sure if it's my computer or a weird (HowTos)