PC stopped connecting via Ethernet cable


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woldsweather

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Windows 10 PRO
My Dell Omen Desktop PC connects to my router at the other end of the house via an ethernet cable that goes through the wall round the house and back through the wall to the (Plusnet) router.

This morning it has connected via wifi not ethernet.

I have rebooted router rebooted PC.

What else can I try?
 
Windows Build/Version
23H2

My Computer

System One

  • OS
    Windows 10 PRO
    Computer type
    PC/Desktop
    Manufacturer/Model
    HP Omen
    CPU
    Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz 3.20 GHz
    Motherboard
    Board: HP 8437 1.3 Serial Number: PGUCR0HP1B90LD Bus Clock: 100 megahertz UEFI: AMI F.53 10/23/2020
    Memory
    64 GB
    Graphics Card(s)
    NVIDIA GeForce GTX 1070
    Sound Card
    NVIDIA High Definition Audio Realtek High Definition Audio
    Monitor(s) Displays
    AOC 2778X [Monitor] (27.2"vis, s/n GJGJ7HA027112, July 2018) DELL U2412M [Monitor] (24.0"vis, s/n XX-00FFXD-XXXXX-529-64AS, February 2015)
    Hard Drives
    c: (NTFS on drive 0) * 999.21 GB 857.61 GB free
    d: (NTFS on drive 1) 1984.45 GB 741.65 GB free
    e: (NTFS on drive 1) 15.95 GB 1.78 GB free
    h: (NTFS on drive 2) 239.93 GB 231.23 GB free
    i: (NTFS on drive 2) 14.81 GB 1.71 GB free
    Keyboard
    Omoton
    Mouse
    Omoton
    Internet Speed
    9Gbps
    Browser
    Chrome Edge and Firefox
    Antivirus
    Kaspersky
    Other Info
    Have discovered 31/01/2022 Internet speed at router 41 mbps. At this PC 9. Internet is via wired ethernet.
Try uninstalling Ethernet driver and reboot your system if it does not work, visit Ethernet manufacturer website to install latest version of the driver.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    HP Pavilion
    CPU
    AMD Ryzen 7 5700G
    Motherboard
    Erica6
    Memory
    Micron Technology DDR4-3200 16GB
    Graphics Card(s)
    NVIDIA GeForce RTX 3060
    Sound Card
    Realtek ALC671
    Monitor(s) Displays
    Samsung SyncMaster U28E590
    Screen Resolution
    3840 x 2160
    Hard Drives
    SAMSUNG MZVLQ1T0HALB-000H1
That occured to me but which one of this lot?
 

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    Ethernet.jpg
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My Computer

System One

  • OS
    Windows 10 PRO
    Computer type
    PC/Desktop
    Manufacturer/Model
    HP Omen
    CPU
    Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz 3.20 GHz
    Motherboard
    Board: HP 8437 1.3 Serial Number: PGUCR0HP1B90LD Bus Clock: 100 megahertz UEFI: AMI F.53 10/23/2020
    Memory
    64 GB
    Graphics Card(s)
    NVIDIA GeForce GTX 1070
    Sound Card
    NVIDIA High Definition Audio Realtek High Definition Audio
    Monitor(s) Displays
    AOC 2778X [Monitor] (27.2"vis, s/n GJGJ7HA027112, July 2018) DELL U2412M [Monitor] (24.0"vis, s/n XX-00FFXD-XXXXX-529-64AS, February 2015)
    Hard Drives
    c: (NTFS on drive 0) * 999.21 GB 857.61 GB free
    d: (NTFS on drive 1) 1984.45 GB 741.65 GB free
    e: (NTFS on drive 1) 15.95 GB 1.78 GB free
    h: (NTFS on drive 2) 239.93 GB 231.23 GB free
    i: (NTFS on drive 2) 14.81 GB 1.71 GB free
    Keyboard
    Omoton
    Mouse
    Omoton
    Internet Speed
    9Gbps
    Browser
    Chrome Edge and Firefox
    Antivirus
    Kaspersky
    Other Info
    Have discovered 31/01/2022 Internet speed at router 41 mbps. At this PC 9. Internet is via wired ethernet.
Realtek Gaming GBE Family Controller.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    HP Pavilion
    CPU
    AMD Ryzen 7 5700G
    Motherboard
    Erica6
    Memory
    Micron Technology DDR4-3200 16GB
    Graphics Card(s)
    NVIDIA GeForce RTX 3060
    Sound Card
    Realtek ALC671
    Monitor(s) Displays
    Samsung SyncMaster U28E590
    Screen Resolution
    3840 x 2160
    Hard Drives
    SAMSUNG MZVLQ1T0HALB-000H1
Also try another cable.....
 

My Computer

System One

  • OS
    Windows 11 Home 23H2 (Build 22631.4112)
    Computer type
    Laptop
    Manufacturer/Model
    Dell
    CPU
    Processor: 11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40G
    Motherboard
    64-bit operating system Dell 0XMF7W
    Memory
    12GB
    Graphics Card(s)
    Intel R Iris R XE Graphics family
    Sound Card
    Cirrus Speakers High Definition Audio
    Monitor(s) Displays
    Generic PnP monitor
    Screen Resolution
    1920 x 1080
    Hard Drives
    NVMe 670p SSDPEKNU512GZ NVMe I NTEL 512GB
    Case
    cheap
    Mouse
    Logitech wireless mouse
    Internet Speed
    16 Mps download
    Browser
    Google Chrome
    Antivirus
    Security: Microsoft Defender & Malwarebytes Premium (with browser guard)
    Other Info
    Dell model: Inspiron 15 3511
One thing you can do to help verify is to look at the lights on the ethernet jack on the PC. See if they are lighting up indicating it's connecting. Could just as easily be the ethernet cable itself.
 

My Computer

System One

  • OS
    Win 7/10/11
    Computer type
    PC/Desktop
    Other Info
    I'm a computer enthusiast so have quite a few systems that I run. More like an advanced hobby.
No lights on the Ethernet cable. Should they be there all the time? I removed the cable and reinserted but no lights.

Have also tried system restore.
 

My Computer

System One

  • OS
    Windows 10 PRO
    Computer type
    PC/Desktop
    Manufacturer/Model
    HP Omen
    CPU
    Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz 3.20 GHz
    Motherboard
    Board: HP 8437 1.3 Serial Number: PGUCR0HP1B90LD Bus Clock: 100 megahertz UEFI: AMI F.53 10/23/2020
    Memory
    64 GB
    Graphics Card(s)
    NVIDIA GeForce GTX 1070
    Sound Card
    NVIDIA High Definition Audio Realtek High Definition Audio
    Monitor(s) Displays
    AOC 2778X [Monitor] (27.2"vis, s/n GJGJ7HA027112, July 2018) DELL U2412M [Monitor] (24.0"vis, s/n XX-00FFXD-XXXXX-529-64AS, February 2015)
    Hard Drives
    c: (NTFS on drive 0) * 999.21 GB 857.61 GB free
    d: (NTFS on drive 1) 1984.45 GB 741.65 GB free
    e: (NTFS on drive 1) 15.95 GB 1.78 GB free
    h: (NTFS on drive 2) 239.93 GB 231.23 GB free
    i: (NTFS on drive 2) 14.81 GB 1.71 GB free
    Keyboard
    Omoton
    Mouse
    Omoton
    Internet Speed
    9Gbps
    Browser
    Chrome Edge and Firefox
    Antivirus
    Kaspersky
    Other Info
    Have discovered 31/01/2022 Internet speed at router 41 mbps. At this PC 9. Internet is via wired ethernet.
Do you have a short cable and move router to the PC and see if it connects?
 

My Computer

System One

  • OS
    11 Pro 23H2 (22631.3737) Feature Pack 1000.22700.1003.0
    Computer type
    Laptop
    Manufacturer/Model
    MSI
    CPU
    i7-10750H
    Motherboard
    MSI MS-17F5
    Memory
    16GB Samsung DDR4 3200
    Graphics Card(s)
    Intel + Nvidia RTX3060 Laptop
    Sound Card
    Realtek
    Monitor(s) Displays
    Samsung 24" Curved (HDMI)
    Screen Resolution
    1920x1080
    Hard Drives
    Sabrent Rocket Gen3 1Tb Smasung EVO 870 1TB
    Antivirus
    Avast
woldsweather said:
No lights on the Ethernet cable. Should they be there all the time? I removed the cable and reinserted but no lights.

Have also tried system restore.
Click to expand...
Yes the lights "should" be illuminated but only if there is a signal detected. Depending on the specific adapter it should have 2 lights and both indicate a certain connectivity. Your Device Manager screenshot shows no issues with the hardware itself but as mentioned could be a driver issue. But again if no lights illuminated this points to hardware. Ethernet cable check both ends including the end connected at router. How about the lights there...at the Router?
 

My Computer

System One

  • OS
    Win 7/10/11
    Computer type
    PC/Desktop
    Other Info
    I'm a computer enthusiast so have quite a few systems that I run. More like an advanced hobby.
I have 2 ethernt cables connected at the router for 2 desktop pc's and don't know which is which. Will move the pc to the router and connect with a different etherent cable.
 

My Computer

System One

  • OS
    Windows 10 PRO
    Computer type
    PC/Desktop
    Manufacturer/Model
    HP Omen
    CPU
    Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz 3.20 GHz
    Motherboard
    Board: HP 8437 1.3 Serial Number: PGUCR0HP1B90LD Bus Clock: 100 megahertz UEFI: AMI F.53 10/23/2020
    Memory
    64 GB
    Graphics Card(s)
    NVIDIA GeForce GTX 1070
    Sound Card
    NVIDIA High Definition Audio Realtek High Definition Audio
    Monitor(s) Displays
    AOC 2778X [Monitor] (27.2"vis, s/n GJGJ7HA027112, July 2018) DELL U2412M [Monitor] (24.0"vis, s/n XX-00FFXD-XXXXX-529-64AS, February 2015)
    Hard Drives
    c: (NTFS on drive 0) * 999.21 GB 857.61 GB free
    d: (NTFS on drive 1) 1984.45 GB 741.65 GB free
    e: (NTFS on drive 1) 15.95 GB 1.78 GB free
    h: (NTFS on drive 2) 239.93 GB 231.23 GB free
    i: (NTFS on drive 2) 14.81 GB 1.71 GB free
    Keyboard
    Omoton
    Mouse
    Omoton
    Internet Speed
    9Gbps
    Browser
    Chrome Edge and Firefox
    Antivirus
    Kaspersky
    Other Info
    Have discovered 31/01/2022 Internet speed at router 41 mbps. At this PC 9. Internet is via wired ethernet.
It's probably not an issue but the usual length for CAT 5 cable is 100 meters or a bit over 300 feet, might check what is in use, Type is printed on the cable sheath. Running unshielded type cable near heavy-use electrical devices can have an issue, sometimes too close to fluorescent light fixtures, etc.
 

My Computers

System One System Two

  • OS
    Win11 Pro RTM
    Computer type
    Laptop
    Manufacturer/Model
    Dell Vostro 3400
    CPU
    Intel Core i5 11th Gen. 2.40GHz
    Memory
    12GB
    Hard Drives
    256GB SSD NVMe M.2 and 2TB SATA HDD
  • Operating System
    Windows 11 Pro RTM x64
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Vostro 5890
    CPU
    Intel Core i5 10th Gen. 2.90GHz
    Memory
    16GB
    Graphics card(s)
    Onboard, no VGA, using a DisplayPort-to-VGA adapter
    Monitor(s) Displays
    24" Dell
    Hard Drives
    512GB SSD NVMe, 2TB WDC HDD
    Browser
    Firefox, Edge
    Antivirus
    Windows Defender/Microsoft Security
Its been working fine fore several years.

Moved PC to router. Wouldn't work with 1st Ethernet cable I tried but did with a secong so Network Adapter seems OPK.

Pointing to the exterior Ethernet cable?
 

My Computer

System One

  • OS
    Windows 10 PRO
    Computer type
    PC/Desktop
    Manufacturer/Model
    HP Omen
    CPU
    Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz 3.20 GHz
    Motherboard
    Board: HP 8437 1.3 Serial Number: PGUCR0HP1B90LD Bus Clock: 100 megahertz UEFI: AMI F.53 10/23/2020
    Memory
    64 GB
    Graphics Card(s)
    NVIDIA GeForce GTX 1070
    Sound Card
    NVIDIA High Definition Audio Realtek High Definition Audio
    Monitor(s) Displays
    AOC 2778X [Monitor] (27.2"vis, s/n GJGJ7HA027112, July 2018) DELL U2412M [Monitor] (24.0"vis, s/n XX-00FFXD-XXXXX-529-64AS, February 2015)
    Hard Drives
    c: (NTFS on drive 0) * 999.21 GB 857.61 GB free
    d: (NTFS on drive 1) 1984.45 GB 741.65 GB free
    e: (NTFS on drive 1) 15.95 GB 1.78 GB free
    h: (NTFS on drive 2) 239.93 GB 231.23 GB free
    i: (NTFS on drive 2) 14.81 GB 1.71 GB free
    Keyboard
    Omoton
    Mouse
    Omoton
    Internet Speed
    9Gbps
    Browser
    Chrome Edge and Firefox
    Antivirus
    Kaspersky
    Other Info
    Have discovered 31/01/2022 Internet speed at router 41 mbps. At this PC 9. Internet is via wired ethernet.
woldsweather said:
Its been working fine fore several years.

Moved PC to router. Wouldn't work with 1st Ethernet cable I tried but did with a secong so Network Adapter seems OPK.

Pointing to the exterior Ethernet cable?
Click to expand...

If not an outdoor rated cable it could be due to moisture in it, or it got damaged.
 

My Computer

System One

  • OS
    11 Pro 23H2 (22631.3737) Feature Pack 1000.22700.1003.0
    Computer type
    Laptop
    Manufacturer/Model
    MSI
    CPU
    i7-10750H
    Motherboard
    MSI MS-17F5
    Memory
    16GB Samsung DDR4 3200
    Graphics Card(s)
    Intel + Nvidia RTX3060 Laptop
    Sound Card
    Realtek
    Monitor(s) Displays
    Samsung 24" Curved (HDMI)
    Screen Resolution
    1920x1080
    Hard Drives
    Sabrent Rocket Gen3 1Tb Smasung EVO 870 1TB
    Antivirus
    Avast
Not a job I can do unfortunatley .
 

My Computer

System One

  • OS
    Windows 10 PRO
    Computer type
    PC/Desktop
    Manufacturer/Model
    HP Omen
    CPU
    Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz 3.20 GHz
    Motherboard
    Board: HP 8437 1.3 Serial Number: PGUCR0HP1B90LD Bus Clock: 100 megahertz UEFI: AMI F.53 10/23/2020
    Memory
    64 GB
    Graphics Card(s)
    NVIDIA GeForce GTX 1070
    Sound Card
    NVIDIA High Definition Audio Realtek High Definition Audio
    Monitor(s) Displays
    AOC 2778X [Monitor] (27.2"vis, s/n GJGJ7HA027112, July 2018) DELL U2412M [Monitor] (24.0"vis, s/n XX-00FFXD-XXXXX-529-64AS, February 2015)
    Hard Drives
    c: (NTFS on drive 0) * 999.21 GB 857.61 GB free
    d: (NTFS on drive 1) 1984.45 GB 741.65 GB free
    e: (NTFS on drive 1) 15.95 GB 1.78 GB free
    h: (NTFS on drive 2) 239.93 GB 231.23 GB free
    i: (NTFS on drive 2) 14.81 GB 1.71 GB free
    Keyboard
    Omoton
    Mouse
    Omoton
    Internet Speed
    9Gbps
    Browser
    Chrome Edge and Firefox
    Antivirus
    Kaspersky
    Other Info
    Have discovered 31/01/2022 Internet speed at router 41 mbps. At this PC 9. Internet is via wired ethernet.
woldsweather said:
Not a job I can do unfortunatley .
Click to expand...

You can't pull it using the bad cable? The thing with non-outdoor rated cable is the sun can deteriorate the jacket then it cracks letting moisture in. Good luck if you can't replace it.
 

My Computer

System One

  • OS
    11 Pro 23H2 (22631.3737) Feature Pack 1000.22700.1003.0
    Computer type
    Laptop
    Manufacturer/Model
    MSI
    CPU
    i7-10750H
    Motherboard
    MSI MS-17F5
    Memory
    16GB Samsung DDR4 3200
    Graphics Card(s)
    Intel + Nvidia RTX3060 Laptop
    Sound Card
    Realtek
    Monitor(s) Displays
    Samsung 24" Curved (HDMI)
    Screen Resolution
    1920x1080
    Hard Drives
    Sabrent Rocket Gen3 1Tb Smasung EVO 870 1TB
    Antivirus
    Avast
woldsweather said:
Not a job I can do unfortunatley .
Click to expand...
It's possible it's the connector at either end. They are replaceable. Takes some special tools however to install a new connector. Nothing fancy however.
 

My Computer

System One

  • OS
    Win 7/10/11
    Computer type
    PC/Desktop
    Other Info
    I'm a computer enthusiast so have quite a few systems that I run. More like an advanced hobby.
BamaInArk said:
It's possible it's the connector at either end. They are replaceable. Takes some special tools however to install a new connector. Nothing fancy however.
Click to expand...

Only thing there is I would still check the cable with a tester. Just spinning the wheels and buying the crimper and connectors if cable is shot, then ending up buying the cable also. It could start working again if it is moisture and the sun dries it out. Then go bad again when moisture comes back. One of those deals where I'd replace the cable with a good outdoor rated one and be done with it. That's just me.
 

My Computer

System One

  • OS
    11 Pro 23H2 (22631.3737) Feature Pack 1000.22700.1003.0
    Computer type
    Laptop
    Manufacturer/Model
    MSI
    CPU
    i7-10750H
    Motherboard
    MSI MS-17F5
    Memory
    16GB Samsung DDR4 3200
    Graphics Card(s)
    Intel + Nvidia RTX3060 Laptop
    Sound Card
    Realtek
    Monitor(s) Displays
    Samsung 24" Curved (HDMI)
    Screen Resolution
    1920x1080
    Hard Drives
    Sabrent Rocket Gen3 1Tb Smasung EVO 870 1TB
    Antivirus
    Avast
I'm pretty sure it is a good outdoor rated cable.
 

My Computer

System One

  • OS
    Windows 10 PRO
    Computer type
    PC/Desktop
    Manufacturer/Model
    HP Omen
    CPU
    Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz 3.20 GHz
    Motherboard
    Board: HP 8437 1.3 Serial Number: PGUCR0HP1B90LD Bus Clock: 100 megahertz UEFI: AMI F.53 10/23/2020
    Memory
    64 GB
    Graphics Card(s)
    NVIDIA GeForce GTX 1070
    Sound Card
    NVIDIA High Definition Audio Realtek High Definition Audio
    Monitor(s) Displays
    AOC 2778X [Monitor] (27.2"vis, s/n GJGJ7HA027112, July 2018) DELL U2412M [Monitor] (24.0"vis, s/n XX-00FFXD-XXXXX-529-64AS, February 2015)
    Hard Drives
    c: (NTFS on drive 0) * 999.21 GB 857.61 GB free
    d: (NTFS on drive 1) 1984.45 GB 741.65 GB free
    e: (NTFS on drive 1) 15.95 GB 1.78 GB free
    h: (NTFS on drive 2) 239.93 GB 231.23 GB free
    i: (NTFS on drive 2) 14.81 GB 1.71 GB free
    Keyboard
    Omoton
    Mouse
    Omoton
    Internet Speed
    9Gbps
    Browser
    Chrome Edge and Firefox
    Antivirus
    Kaspersky
    Other Info
    Have discovered 31/01/2022 Internet speed at router 41 mbps. At this PC 9. Internet is via wired ethernet.
steveg said:
Only thing there is I would still check the cable with a tester. Just spinning the wheels and buying the crimper and connectors if cable is shot, then ending up buying the cable also. It could start working again if it is moisture and the sun dries it out. Then go bad again when moisture comes back. One of those deals where I'd replace the cable with a good outdoor rated one and be done with it. That's just me.
Click to expand...
I was going to suggest a simple ethernet cable tester.
 

My Computer

System One

  • OS
    Win 7/10/11
    Computer type
    PC/Desktop
    Other Info
    I'm a computer enthusiast so have quite a few systems that I run. More like an advanced hobby.
If you do replace the cable, I would suggest going with CAT6 cable instead of CAT5e. More bandwidth, more speed, and less affected by distance and noise.
 

My Computer

System One

  • OS
    Win 11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self build
    CPU
    Ryzen 5800X
    Motherboard
    Gigabyte x570 Aorus Elite Wifi
    Memory
    32 GB GSkill Trident Neo with pretty LED lights
    Graphics Card(s)
    ASUS TUF GAMING RTX 3070 Ti
    Sound Card
    On board Realtek
    Monitor(s) Displays
    2 x Samsung 32 inch curved - one 4K, one 1080p
    Screen Resolution
    4K, 1920 x 1080
    Hard Drives
    1 TB Samsung 980 Pro Nvme, 1 TB Samsung 970 EVO Nvme, 2 x Samsung 970 2TB SSD SATA
    PSU
    EVGA 1000Q
    Case
    Rosewill something or other
    Cooling
    Noctua NH-D15. A whole schwak of Noctua case fans. $$$
    Keyboard
    Logitech G815
    Mouse
    Logitech G502 Hero
    Internet Speed
    700 up, 600 down
    Browser
    Firefox
    Antivirus
    MalwareBytes
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