Question Laptop not connecting to monitor

[ferkh10]

Have a Lenovo Legion 5 laptop that has suddenly stopped connecting to an AOC monitor. Worked fine for a few years, just stopped working and cant figure it out despite spending quite a few hours tryinmg to sort it.
Windows 11 with a Nvidia GeForce GTX 1660 Ti
Monitor wont recognise that laptop and just says "no signal".

Heres what I'vew done so far:

Tested with another HDMI cable (still doesnt work)
Tested another laptop on the monitor (all fine)
Tested power lead (all fine)
Looked at Display in Device Manager (Nvidia GeForce GTX 1660 Ti driver showing as working fine, no issues)
Tried to cast the display to the monitor with Windows key & P (no joy)
Completely rebuilt Windows (still doesnt work)
Looked at HDMI port for physical damage (nothing)
Display working and playing games all fine on Laptop display (hints nothing wrong with GPU)

Any other suiggestions?

 

[COLGeek]

Have you toggled through the video output options (Fn key) to see if that changes the behavior?

Have you connected the display to another device to verify it is working?

 

[ferkh10]

Have you toggled through the video output options (Fn key) to see if that changes the behavior?

Have you connected the display to another device to verify it is working?

Yes to both.

Just hooked the laptop up to another (known working) monitor, doesn’t work on that either.

 

[COLGeek]

I suppose the port may be defective. Does Windows detect the presence of an attached display at all?

 

[ferkh10]

No, Windows doesn’t detect an extra display.
Is the hdmi port on the motherboard or separate? Guess it’s a new motherboard job if it’s on there?

 

[COLGeek]

No, Windows doesn’t detect an extra display.
Is the hdmi port on the motherboard or separate? Guess it’s a new motherboard job if it’s on there?

It is integrated into the motherboard and not user replaceable/serviceable.

 

[ferkh10]

Another idea - would a USB-C hub with hdmi bypass the hdmi port on the motherboard?

 

[COLGeek]

Maybe. Are you using this extra display for gaming (not really suitable for that) or general use?

Do you have a specific link for your Lenovo variant? Need to see if your USB-C outputs video as well.

 

[ferkh10]

Yep, it’s the kids for gaming.

It’s this one
https://www.amazon.co.uk/Lenovo-Legion-Gaming-GeForce-Windows/dp/B08BLK6TQM

 

[COLGeek]

Yep, it’s the kids for gaming.

It’s this one
https://www.amazon.co.uk/Lenovo-Legion-Gaming-GeForce-Windows/dp/B08BLK6TQM

While I can't find the specs for the exact model number of that laptop, I did find one that is very close. That model supports video via USB-C:

1x USB-C® 3.2 Gen 1 (support data transfer and DisplayPort™ 1.2)

Does your display have a DisplayPort or only HDMI?

 

[ferkh10]

Both DP and HDMI

Can’t get it hooked up via the USB-C HDMI hub, but have just ordered a usbc to dp able from Amazon. Arrives on Friday so will try that.

Thanks for your help, will update when I receive the cable.

 

[COLGeek]

Fingers crossed. Standing by.

 

[ferkh10]

Just got the USB-C to DP cable through from Amazon, no joy. Still just showing "No signal" on the monitor.

Doing a bit of reading and some posts on Reddit indicate I'll need to use a USB-C to DP adapter and then a DP to DP cable to the monitor and then it'll work.

Some faffing about, this 😀😀

 

[ferkh10]

Now received a USB-C to DP adapter and hooked up to monitor via DP and still no joy - still saying "no signal" on the monitor.

Im now very perplexed - for the HDMI port to suddenly stop working is one thing, but for the USB-C to stop working at the same time is very confusing. Just cant see whats wrong here.

 

[COLGeek]

It is possible that the laptop motherboard is damaged (the ports are integrated into that). Something as simple as a static shock can cause such damage.

 

[ferkh10]

Hi, yes that’s where my thoughts are at now.
Odd one though as all working perfect, just won’t hook up to monitor.