"Laptop shuts down after 1 second"에 답변have an HP dv9000, it although old it was expensive when I bought it. It shuts down and does not reboot. Messages say "no operating system". It then starts up after an hour of being shut off. So this sounds like a heat issue. The fan runs well it's not the problem. Even though it's an old laptop, it should work because it has the resources to run video and music. I will try a cooler. Nobody offer a definite answer very sad this machine has been retired only a year after original purchase.