This is a head scratcher. This is my work laptop that is only used occasionally for testing vendor demo gear, attending training classes, etc, mostly Audio Visual related programs and gear like Crestron, Biamp, etc and equipment they control. It really hasn't seen a lot of use over the years, spending most of its days sitting in its case at my desk.
So, I have an AV installation trip coming up soon and was going to bring it with me for Crestron and Biamp programming if needed, so I brought it home the other day to update the Windows and Crestron software (no Internet connection for it at work). Everything installed great and it updated everything, and restarted after the updates, no issues. I closed the lid to put it to sleep, so I could sleep (it was in my bedroom).
The next morning I opened the lid and hit the power button and the power button lit up and that's about it. No post, no screen text, nothing. Just the power and battery light on (if plugged in), both on the keyboard and on the lid LEDs near the hinge. Plugging in external monitors (VGA or HDMI) didn't show anything either, so it's not the display. I can also eject the DVD drive when power is on, and the fan runs at idle speeds when powered on.
Here's the weird thing...during all my troubleshooting, sometimes it starts up fine (if the hdd light flashes when I press Power, I know it'll start).
So, here's what I've found in my troubleshooting:
When it's up and running, it acts like there is no problem. I thought I had it fixed last night after disassembling and reassembling it after making sure there were no obvious loose/pinched wires or cards, using it for a few hours to do some programming, even installing a wifi USB dongle (it has no wifi card) and rebooting afterward. But then this morning it wouldn't start up again after simply closing the lid last night.
So, any ideas?
I have not updated the chipset driver, and it did do some Windows updates, although I'm not sure how many. This isn't the first time it's ever been updated, though, I bring it home a couple/few times a year.