F5F Stay Refreshed Hardware Desktop Question Computer experiences Ethernet disconnection occasionally after turning on, alongside other problems.

Question Computer experiences Ethernet disconnection occasionally after turning on, alongside other problems.

Question Computer experiences Ethernet disconnection occasionally after turning on, alongside other problems.

B
Beengt
Junior Member
12
04-02-2025, 04:45 AM
#1
I've been working with an old work PC (an HP 290 G1 Microtower) as a temporary NAS. Recently, it's started having issues.
At the beginning of the week, while transferring files, it suddenly lost network connection. Now, when I say it isn't connected, I mean the Ethernet port wasn't working. Windows reported that "no network cards were detected, check drivers" (the Ethernet port is built into the motherboard). I tried everything: verified the cable and router, updated the HP network drivers from their site, reinstalled Windows completely—still no success.
I gave up and retried the next day. It connected for about five minutes, then the problem came back. Yesterday, I left it unplugged completely, and today it stayed online for nearly 30 minutes.
What should I do to resolve this?
Additional notes:
- Yesterday, it encountered CMOS checksum errors. I replaced the CMOS and updated the BIOS just in case. No more CMOS/BIOS issues, but network problems continue.
- This afternoon, one of the USB ports stopped working for me. I only noticed this because it was the port where my keyboard was connected; otherwise, the PC wouldn't detect it or warn me. The keyboard works fine, but since both the USB and Ethernet ports are failing, I worry the I/O might be completely lost.
>inb4 consider a new motherboard/power supply
Can't, these are specific to this chassis+mobo setup. Are business PCs affected?
>inb4 get a network card
The only PCIe slot is currently taken by a graphics card. Unless the built-in Ethernet port fails permanently, I'd prefer to keep it.
B
Beengt
04-02-2025, 04:45 AM #1

I've been working with an old work PC (an HP 290 G1 Microtower) as a temporary NAS. Recently, it's started having issues.
At the beginning of the week, while transferring files, it suddenly lost network connection. Now, when I say it isn't connected, I mean the Ethernet port wasn't working. Windows reported that "no network cards were detected, check drivers" (the Ethernet port is built into the motherboard). I tried everything: verified the cable and router, updated the HP network drivers from their site, reinstalled Windows completely—still no success.
I gave up and retried the next day. It connected for about five minutes, then the problem came back. Yesterday, I left it unplugged completely, and today it stayed online for nearly 30 minutes.
What should I do to resolve this?
Additional notes:
- Yesterday, it encountered CMOS checksum errors. I replaced the CMOS and updated the BIOS just in case. No more CMOS/BIOS issues, but network problems continue.
- This afternoon, one of the USB ports stopped working for me. I only noticed this because it was the port where my keyboard was connected; otherwise, the PC wouldn't detect it or warn me. The keyboard works fine, but since both the USB and Ethernet ports are failing, I worry the I/O might be completely lost.
>inb4 consider a new motherboard/power supply
Can't, these are specific to this chassis+mobo setup. Are business PCs affected?
>inb4 get a network card
The only PCIe slot is currently taken by a graphics card. Unless the built-in Ethernet port fails permanently, I'd prefer to keep it.

F
FELIPE369
Member
234
04-02-2025, 04:45 AM
#2
You could see if the prebuilt is pending any BIOS updates. You could look into this;
https://www.tp-link.com/bd/home-networki.../#overview
if your Ethernet adapter conks out.
F
FELIPE369
04-02-2025, 04:45 AM #2

You could see if the prebuilt is pending any BIOS updates. You could look into this;
https://www.tp-link.com/bd/home-networki.../#overview
if your Ethernet adapter conks out.

J
jaayk
Member
123
04-02-2025, 04:45 AM
#3
This prebuilt model lacks USB 3.0, though a slower USB 2.0 option is available. It could be considered for Plan B.
J
jaayk
04-02-2025, 04:45 AM #3

This prebuilt model lacks USB 3.0, though a slower USB 2.0 option is available. It could be considered for Plan B.

D
duta_
Member
161
04-02-2025, 04:45 AM
#4
Attempted to refresh the BIOS once more. It seems it didn't actually update. The document on HP's website is dated February 2024, yet the BIOS still shows December 2023. I'll follow up if the Ethernet connection fails again.
D
duta_
04-02-2025, 04:45 AM #4

Attempted to refresh the BIOS once more. It seems it didn't actually update. The document on HP's website is dated February 2024, yet the BIOS still shows December 2023. I'll follow up if the Ethernet connection fails again.

D
dm20_tm
Member
227
04-02-2025, 04:45 AM
#5
It did.
Sidenote: The system started with a 500GB hard disk and an optical unit. Currently, it uses the same 500GB drive, an additional 1TB drive, and a 2.5" SSD caddy instead of the optical drive. Is it possible I'm overloading the power supply? It had spare SATA cables.
D
dm20_tm
04-02-2025, 04:45 AM #5

It did.
Sidenote: The system started with a 500GB hard disk and an optical unit. Currently, it uses the same 500GB drive, an additional 1TB drive, and a 2.5" SSD caddy instead of the optical drive. Is it possible I'm overloading the power supply? It had spare SATA cables.

D
Dylanhtx
Member
156
04-02-2025, 04:45 AM
#6
It was a strange update. I left the PC off for the weekend, and the Ethernet worked fine for most of the afternoon yesterday. It stayed functional today too, until Windows 10 made a noise and played through the built-in speaker. After that, networking stopped completely. I shot it in the dark here—could the built-in speaker be interfering with the network somehow? I won’t be around near the PC until next week, so I’ll try unplugging it when I can (it’s just annoying either way).
D
Dylanhtx
04-02-2025, 04:45 AM #6

It was a strange update. I left the PC off for the weekend, and the Ethernet worked fine for most of the afternoon yesterday. It stayed functional today too, until Windows 10 made a noise and played through the built-in speaker. After that, networking stopped completely. I shot it in the dark here—could the built-in speaker be interfering with the network somehow? I won’t be around near the PC until next week, so I’ll try unplugging it when I can (it’s just annoying either way).

K
KadirReis
Member
108
04-02-2025, 04:45 AM
#7
Are you verifying the lights to confirm the port is truly inactive upon activation? It might be due to a faulty cable or link instead of the port itself. If the port is indeed faulty, initiate the machine in safe mode with networking to check its functionality.
K
KadirReis
04-02-2025, 04:45 AM #7

Are you verifying the lights to confirm the port is truly inactive upon activation? It might be due to a faulty cable or link instead of the port itself. If the port is indeed faulty, initiate the machine in safe mode with networking to check its functionality.

E
Emma31178
Member
193
04-02-2025, 04:45 AM
#8
The lights dim when the connection drops. I’m sure the cable is properly plugged into the Ethernet port on my laptop. I recall seeing it there before. Trying Safe Mode with Networking didn’t help either. Now I’m giving up on fixing this port and plan to use a USB to Ethernet adapter instead.
E
Emma31178
04-02-2025, 04:45 AM #8

The lights dim when the connection drops. I’m sure the cable is properly plugged into the Ethernet port on my laptop. I recall seeing it there before. Trying Safe Mode with Networking didn’t help either. Now I’m giving up on fixing this port and plan to use a USB to Ethernet adapter instead.