Hi everyone, I'm hoping somebody may have a solution to a baffling problem. I connected an external USB HDD to my laptop and it suddenly switched off, since then if power it up it starts up for a second and then stops dead but the power on light and WiFi light stays on. Oddly I leave it for 24 hours say, it will boot up starting to load Windows but then suddenly shuts off again. After that I just get the same described earlier. I've changed the fan for new one but the laptop is almost new anyway so it;s not a build up of dust etc inside it looks fine. I've also tried removing RAM HDD etc but still no luck. Any ideas?