Win 7 wont work without power supply

When using boot camp i hold down option key to boot up win 7 and it works completly fine if the power supply is plugged in. but without the power supply win7 cant boot. its starts up the loading screen then when its just about to get to login screen it goes black. when it is black if i plug in power supply then the screen appears and win 7 works fine but without the power supply im not able to see the screen.
win 7 works every sinlge time with power supply to no problems at all.
the only problem is win7 without the power supply and the screen just shuts off.
any suggestions?

I had the same problem. Then I set the power schemes all back to default. The one think I changed was the screen lighting. After I set the power schemes back to default the problem was resolved.

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"Marc Prudhommeaux" <[email protected]> wrote in message
news:[email protected]..
Alex-
What exception are you seeing? Do you know if it resolving the JNDI
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In article <aodca1$ncu$[email protected]>, Alex Roytman wrote:
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SolarMetric Inc. http://www.solarmetric.com
Kodo Java Data Objects Full featured JDO: eliminate the SQL from yourcode

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Greetings koningsvaren,
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Will not turn on, will not turn on unless connected to power, or unexpected power off
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Im having the same issue.
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Win 7 wont work without power supply

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