Swift 3 display shut off, does not turn back on

Hey all, I have a swift 3 that randomly shut off mid use. I tried to turn it back on, and although the keyboard lights up, the fan powers on, and the lights (blue and yellow) on the side also lights up, I am not able to get the display to work. Connecting it to an external monitor via HDMI also shows no signal, so it's not specific to the display on the laptop itself. I've done a reset on the bottom of the laptop many times, to no avail. I am starting to think it's either the motherboard or RAM that's fried, but I can't explain how that could randomly occur out of the blue mid-use and while not doing anything overly bearing on the memory.

Any ideas what could have gone wrong, and how to fix?

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billsey

Did you do the full battery reset, or just pushed the button? The full process is to disconnect everything, especially the power, then press and hold the reset for 15-30 seconds. Release and wait 15-30 minutes and plug only the power back in. Wait for the battery indicator to show a full battery (turns from amber to blue) then try turning it back on.

Swift3issues

@billsey yes I did the full process, unfortunately. Any other ideas?

billsey

OK, so it's less likely to be a battery issue or a confused battery issue. Can you get into the BIOS? If so try wandering around there for long enough to see if it's stable. That would point to a Windows issue. If you can't get into the BIOS, the screen doesn't light and an external display doesn't come up then it's likely to be failing in POST or prior to POST. A failure during POST usually gives a beep code until POST gets the display up, then the screen displays what the problem is.

Rawlo1969

billsey said:

Did you do the full battery reset, or just pushed the button? The full process is to disconnect everything, especially the power, then press and hold the reset for 15-30 seconds. Release and wait 15-30 minutes and plug only the power back in. Wait for the battery indicator to show a full battery (turns from amber to blue) then try turning it back on.

Hi Billsey,

I have a Swift SF315-41 (Swift 3 with AMD Ryzen 5 2500U and Radeon Vega Mobile Gfx) and never have any battery issues, but do very frequently get "no signal" from the HDMI port. 7 or 8 resets later and it goes ok, but getting more frequent.

I fired up this morning, got the "no signal" and did the reboot you suggested, above, and it worked 1st time - what could be causing this symptom, and given I have no battery issues, how could it be battery related?

Cheers,

billsey

When the battery gets confused (internal data is corrupted) it reports to Windows some bogus states. Windows can use those to do almost anything related to power consumption, and turning off screens is one of the power consumption options. It's probably seeing power available of -1 on a scale of 10-100 or something.

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