Lenovo IdeaFlex 5: Blank Screen & Blinking LED After Windows 11 Update – GPU or Motherboard

[MMK_aoe]

Hello everyone,
 

I really need your help diagnosing the issue with my Lenovo IdeaFlex 5, which I bought 4 years ago for university.

Here is the issue: I left my laptop on for a Windows 11 update, and when I woke up the next morning, it stopped working. Although the laptop appears to be running—its fans are spinning and the keyboard light is on—there is no display. I have tried everything, including using the Lenovo emergency button, holding down the power button for an extended period, and removing the battery. I even replaced the SSD; I tested it in my PC, and everything worked fine without any data loss. When I booted the notebook’s SSD in my gaming PC for the first time, it showed some Windows update errors but was able to recover without any issues. I then installed my PC’s SSD into the laptop, yet I still get no display (the laptop appears to be running normally, with fans spinning and lights on). The power button is blinking, possibly indicating an error code, but I couldn’t figure out what it means.

My question now:

What should I do? Is my graphics card or motherboard broken? I couldn’t find anything helpful online.

I would be very thankful and would even consider paying if someone could honestly help me.

Thank you for reading.


Lenovo IdeaPad Flex 5-14ALC05
2021
Ryzen 7 5700U, 16GB DDR4, 500GB SSD

[strange13930]

2 minutes ago, MMK_aoe said:

Hello everyone,
 

I really need your help diagnosing the issue with my Lenovo IdeaFlex 5, which I bought 4 years ago for university.

Here is the issue: I left my laptop on for a Windows 11 update, and when I woke up the next morning, it stopped working. Although the laptop appears to be running—its fans are spinning and the keyboard light is on—there is no display. I have tried everything, including using the Lenovo emergency button, holding down the power button for an extended period, and removing the battery. I even replaced the SSD; I tested it in my PC, and everything worked fine without any data loss. When I booted the notebook’s SSD in my gaming PC for the first time, it showed some Windows update errors but was able to recover without any issues. I then installed my PC’s SSD into the laptop, yet I still get no display (the laptop appears to be running normally, with fans spinning and lights on). The power button is blinking, possibly indicating an error code, but I couldn’t figure out what it means.

My question now:

What should I do? Is my graphics card or motherboard broken? I couldn’t find anything helpful online.

I would be very thankful and would even consider paying if someone could honestly help me.

Thank you for reading.


Lenovo IdeaPad Flex 5-14ALC05
2021
Ryzen 7 5700U, 16GB DDR4, 500GB SSD

try connecting your laptop to a external display and see if you get a image.

[MMK_aoe]

25 minutes ago, strange13930 said:

try connecting your laptop to a external display and see if you get a image.

Sadly, nothing happens. The monitor detects it, but no image.

 

Tab key light is constantly on, power led is blinking, but no image

[strange13930]

4 minutes ago, MMK_aoe said:

Sadly, nothing happens. The monitor detects it, but no image.

 

Tab key light is constantly on, power led is blinking, but no image

even if it's not under warranty, still contact Lenovo support team. make sure you tell them about the tab light constantly on and power button blinking, it an error code.

[Isuck Assimov]

might be worth to check whether you get it to POST by removing RAM.

If it's not running the stock SO-DIMMs there's a chance that RAM isnt whitelisted by Lenovo and thus refusing to boot.

Sadly had this issue with Lenovo devices before after BIOS or firmware Updates which apparently updated the whitelisted components and blocked previously running RAM

[MMK_aoe]

2 hours ago, Isuck Assimov said:

might be worth to check whether you get it to POST by removing RAM.

If it's not running the stock SO-DIMMs there's a chance that RAM isnt whitelisted by Lenovo and thus refusing to boot.

Sadly had this issue with Lenovo devices before after BIOS or firmware Updates which apparently updated the whitelisted components and blocked previously running RAM

I think the ram is soldered on to the Mainboard, at least there nothing on the side I can see and I didn’t want to turn over the whole Mainboard 

[UNIXNETWORK]

Remove battery and try turn on from AC.

[MMK_aoe]

On 3/17/2025 at 2:18 AM, UNIXNETWORK said:

Remove battery and try turn on from AC.

What difference would that make ?

 

[UNIXNETWORK]

I think could be battery, power related issue. But you can try reset NVRAM/CMOS. Remove battery, do not attach AC power. Hold power button for 20 sec.