Laptop shuts off 5 to 30 seconds after startup, usually just as the four flag parts fly together as windows 7 boots up. Sometimes before that, or even when automatic repair is attempting to start after a few failed boots. If I keep trying it will usually boot after 9 or 12 tries and run fine until next time. . Any ideas, it is not the battery, or the software, as same hard drive boots fine if moved to another identical computer. I also replaced the processor and both memory sticks. The cooling gel on the processor is in good shape and fresh too. I made a video of the problem here: https://drive.google.com/open?id=1oeadiMYuwXWVKmkjKCzd-...