Y540-17 wont turn on, power and keyboard blinking.

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Patrycjusz @rast1r

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发帖于: 2020年6月27日

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Y540-17 wont turn on, power and keyboard blinking.

Well I have lenovo legion Y540-17 laptop. And suddenly I stumbled a problem. One day after restard the laptop didn’t came back. The power and keyboard light started blinking, only holding power turned off the whole thing, and couldnt power it up. Took out the battery, and CMOS held power for 30 sec to powerdown all. Then put back CMOS and battery, it was blinking all over again, but pressing novo button turned on the laptop. And it worked, unfortunetly not for long, last night I turned off laptop with some updates, it looked all fine. But after sometime it looked like the laptop wanted to turn on, and it got all over blinking loop. So I tried taking out CMOS with battery, but this time this doesnt work. After turning on, for a while power buttom blinks fast for about 15 seconds, then the vents try to run, the light on power button keps blinking but didnt make it to run. Does anyone have an idea what should I try next?

Lenovo legion Y540-17IHR

with i7 9750

rtx 2060

2x8GB ram

nVME disk

Well problem is probably solved, partially. I took out recovery modem and for now it runs. No booting problem for now

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Hi @rast1r ,

As you didn't say whether or not you had the charger connected, what indications do you get when just the charger is connected, is it charging OK?

If so allow it to charge for a while and then try turning it on with the charger still connected and check.

由 jayeff 完成的 2020年6月27日

Well I tried, if the chager is in the light near the connector is on all time(doesnt blink like the power and keyboard). I even tried without battery and just connecting charger.

由 Patrycjusz 完成的 2020年6月27日

I have the same problem but don’t have a battery in mine. Could this be my charging cable?

由 j.d.topp 完成的 2021年1月5日

Hi @j.d.topp

Could be. Any lights? If not try moving the cable around to see if that helps.

由 mike 完成的 2021年1月5日

Hey,

The problems is actually regarding the motherboard.

In my case it was with the keyboard bus connector(cable) on motherboard.

I disconnected that cable and turned own with nova button, which is a temporary solution. Later replaced my motherboard, luckily i was in warranty period.

In your case it can be due to other cable too.

Try checking your ram also.

Thanks.....

由 techy 完成的 2021年8月1日

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Hi @rast1r ,

As you didn't say whether or not you had the charger connected, what indications do you get when just the charger is connected, is it charging OK?

If so allow it to charge for a while and then try turning it on with the charger still connected and check. — jayeff
Well I tried, if the chager is in the light near the connector is on all time(doesnt blink like the power and keyboard). I even tried without battery and just connecting charger. — Patrycjusz
I have the same problem but don’t have a battery in mine. Could this be my charging cable? — j.d.topp
Hi @j.d.topp

Could be. Any lights? If not try moving the cable around to see if that helps. — mike
Hey,

The problems is actually regarding the motherboard.

In my case it was with the keyboard bus connector(cable) on motherboard.

I disconnected that cable and turned own with nova button, which is a temporary solution. Later replaced my motherboard, luckily i was in warranty period.

In your case it can be due to other cable too.

Try checking your ram also.

Thanks..... — techy

jayeff @jayeff 声誉积分: 450.6千 11 367 1.4千 · Answer 1 · 2020-06-27T18:34:30-07:00

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jayeff @jayeff

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Hi @rast1r

The blinking power light indicates a low battery or at least a problem with the battery and therefore possibly the charging circuit. But since it didn’t start on the charger either and as you have done a BIOS reset, eliminating the possibility that it was a corrupted BIOS, it may be a motherboard problem.

How old is the laptop?

From the reviews it appears to be a recently released model.

If it is <12 months old get it repaired under warranty.

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Well it has warranty only in the US, and I’m in europe where I can send it so service that doesn’t cover. So at the beginning I look for solution myself. I actually got to run it yesterday, by doing everting all over but also tried to push cables more. But today it doesn’t work again. Also made bios upadate and windows all over. As well I got LCF debug page, pressing power everything worked

由 Patrycjusz 完成的 2020年6月28日

Courier them via DHL…

Just kidding.

Did you check your battery?

由 George Gibson 完成的 2020年6月28日

Yes, even got new cmos battery, laptop acts the same either with battery in and out, just on charger

由 Patrycjusz 完成的 2020年6月28日

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Lee Howdyshell @leehowdyshell 声誉积分: 13 1 · Answer 2 · 2024-04-03T16:40:35-07:00

Same/similar problem - SOLVED

Lenovo Thinkpad T540P, i54300m. This thing was working a few days ago. Tonight it would not go to the POST. It simply flashed the keyboard backlight and 3 flashes of the power button over and over and over. Would not shutdown, cntl alt delete does nothing. The only way to keep trying things were to remove the battery (simple) and unplug the power cable. I tried multiple things, no luck. I thought it was a long shot but I swapped the hard drive with one I had laying around with Lubuntu on it. It booted right up like nothing was ever wrong. After shutting down Lubuntu I put the original drive in with WIN 10 (slow as smoke with a 5400RPM drive). It booted right up again. So, either the original drive wasn't seated the best causing the issue or it was in some state that the boot routine hated. Maybe some unclean shutdown, who knows. My issue is solved. I do run into various issues reclaiming old, unwanted laptops. I know this is an older thread but maybe this will help at least one other person from early senility.

联想笔记本电脑

Y540-17 wont turn on, power and keyboard blinking.

Update (06/28/2020)

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