Diagnostic Process □Ĭlearly the hardware seemed to work, at least some of the time, obviously it was some kind of intermittent problem preventing the hardware from booting all the way. I do however hope that some of this information will be useful to those who are brave enough to attempt fixing this issue themselves. ⚠️ Warning This is not a guide on how to fix the problem. On the odd occasion that I got the machine to actually boot-up and start Windows 8.1, the machine seemed to be reasonably stable, however if the machine turned off it’ll often not boot back up. Pressing the power button caused the fan to spin up, LCD backlight to come on and the LED’s to come on however the machine didn’t go any further, holding the power button for ~20secs got it to switch off again, occasionally it would actually boot-up. Getting the machine to boot was harder than it should be, it seemed to only boot-up randomly. Searching for information on Lenovo laptops, it appears though that this is a relatively common problem. This entire process took way longer and was way more complicated than it should originally have been and is probably a few day’s (at least) worth of googling, reading and thinking. The main problem, and reason it landed up with me, is that it was randomly turning off. My father-in-law dropped off his Lenovo B590 laptop that had a few peculiar issues. Notes on repairing my father-in-law’s Lenovo B590
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