I have a PC with Windows 7, I've had it for a bit over three years now. It's made by now-defunct Rain Computers, nowadays Molten Music Technology. http://moltenmusictechnology.com/
OS: Windows 7 Home Premium
Processor: Intel Core i7-2640M CPU @ 2.80 GHz
RAM: 8 GB
64-bit Operating System.
I've had the black screen problem three times, and each time it has returned to normal without any reason. It has always happened at startup: instead of seeing the boot screen, it just went entirely black. I could then use the laptop normally by connecting it to a projector. I troubleshooted by taking out the battery, holding down the power button to drain all the current, then restarting (it didn't work). Also, the backlight functioned normally. Every time it happened, before I had the chance to take it to a repairshop, it started working again by itself within a few days at most. Whenever the black screen problem disappeared, it would do so at startup, I would shut down the computer, and next time I would start it it would start normally.
I couldn't find online any sort of explanation for this. My best explanation is that there is a lose circuit. The problem would appear in connection to me having to pack my laptop, either in a tight backpack or in a bag, but there was always some travelling involved. The problem wouldn't disappear after a normal restart, every time it disappeared it was after some more travelling.
It has occurred 3 times - first one year ago, second half a year ago, and third just this week. This last time there was a blue screen at shutdown. It restarted by itself and announced "Windows has recovered from an unexpected shutdown". I then shut it down and next time I started it the black screen problem appeared. This would maybe indicate a system error.
It's not an urgent problem - the laptop works now and the previous times the problem did not return right away. But I'm confused as to what could be the cause, and if there is anything I could do to prevent it from happening again.
Sorry for long post and thank you in advance!