Hey there... I have a Lenovo G450 laptop with windows 7. Sometimes when i start my laptop, the screen turns red, then green, then blue, then white and then black. This sequence continues for a long time. Though the problem fixes on its own once i restart the system a number of times ..but still ..i am worried... I'd be highly obliged if you could provide me with some credible solution to the problem.
We probably won't be able to help you with this one unless someone has had a similar experience... it could be any number issues with your components and there's not much we can do to narrow it down without more symptoms. I would try another power supply if you can borrow one or find an all in one power supply that you can use for testing with your laptop.