Hello,
I kinda need a hand with this. This issue has been present since at least early 2021, but it's escalated to the point where it happens pretty much everyday. It's also survived across three Windows clean installs, and as stated in title WiFi connection is unaffected (I'm wired on my Desktop PC).
Internet just drops for a few seconds, randomly - it can be stable for a few hours and then all of a sudden drop several times in a matter of few hours.
This is what I tried so far with no success:
I probably forgot something but it's all I can remember for now. Thought replacing the cable would make the trick but clearly it didn't, and I don't think it's a faulty network adapter since it responds to pinging all the time. As router signal levels are within normal values I also believe it's unlikely ISP is the culprit here. What I also noticed is the network adapter at times would negotiate only 100 Mbps even though is Gigabit. I'm not sure if this is normal behavior.
I'm pretty much clueless at this point. Any help? If you need any logs let me know.
Thanks in advance
=== Specs and additional info ===
MOBO: GA-H81M-H (rev 1.1)
CPU (iGPU): Intel Core i5-4430 @ 3.0 GHz (HD Graphics 4600)
dGPU: XFX AMD Radeon HD 6570
PSU: Generic 500W (included w/case)
OS: Windows 10 21H2 (19044.1526)
Network adapter in use: Realtek PCIe GBE Family Controller (on-board)
Driver version: 10.1.505.2015
=== Router info ===
Model: Sagemcom F@st 3890 v3 (all-in-one) (# of LAN ports: 4)
Number of connected devices: 7 at max including one Laptop, one Desktop, Chromecast and four mobile phones (not sure it's the problem since it's been this way for years and never had this issue before)
NAS and/or server connected: No
=== Errors ===
I observed two possibly related events recorded in Event Viewer:
Warning, DNS Client Events, ID 1014, Name resolution for the name <URL> timed out after none of the configured DNS servers responded (it can be any URL but most of the time it's just 'wpad').
Error, DHCPv6-Client, ID 1000, Your computer has lost the lease to its IP address <network_card_ipv6_Adress> on the Network Card with network address <network_card_Address>.
I kinda need a hand with this. This issue has been present since at least early 2021, but it's escalated to the point where it happens pretty much everyday. It's also survived across three Windows clean installs, and as stated in title WiFi connection is unaffected (I'm wired on my Desktop PC).
Internet just drops for a few seconds, randomly - it can be stable for a few hours and then all of a sudden drop several times in a matter of few hours.
This is what I tried so far with no success:
- Running sfc /scannow.
- Checking router signal levels (all OK).
- Checking router event logs (nothing relevant).
- Swapping ethernet cable between different LAN ports.
- Replacing the ethernet cable.
- Disabling proxy.
- Disabling network discovery.
- Disabling smart multi-homed name resolution via GPO.
- Disabling IPv6.
- Preventing Windows from turning off the adapter to save power.
- Running ipconfig with /flushdns /release /renew arguments.
- Resetting winsock.
- Reinstalling the network adapter.
- Updating the network adapter driver.
- Changing DNS to Google's.
- Changing DNS to Cloudflare's.
- Checking connections and physical damage in the motherboard (except CPU socket itself)
I probably forgot something but it's all I can remember for now. Thought replacing the cable would make the trick but clearly it didn't, and I don't think it's a faulty network adapter since it responds to pinging all the time. As router signal levels are within normal values I also believe it's unlikely ISP is the culprit here. What I also noticed is the network adapter at times would negotiate only 100 Mbps even though is Gigabit. I'm not sure if this is normal behavior.
I'm pretty much clueless at this point. Any help? If you need any logs let me know.
Thanks in advance
=== Specs and additional info ===
MOBO: GA-H81M-H (rev 1.1)
CPU (iGPU): Intel Core i5-4430 @ 3.0 GHz (HD Graphics 4600)
dGPU: XFX AMD Radeon HD 6570
PSU: Generic 500W (included w/case)
OS: Windows 10 21H2 (19044.1526)
Network adapter in use: Realtek PCIe GBE Family Controller (on-board)
Driver version: 10.1.505.2015
=== Router info ===
Model: Sagemcom F@st 3890 v3 (all-in-one) (# of LAN ports: 4)
Number of connected devices: 7 at max including one Laptop, one Desktop, Chromecast and four mobile phones (not sure it's the problem since it's been this way for years and never had this issue before)
NAS and/or server connected: No
=== Errors ===
I observed two possibly related events recorded in Event Viewer:
Warning, DNS Client Events, ID 1014, Name resolution for the name <URL> timed out after none of the configured DNS servers responded (it can be any URL but most of the time it's just 'wpad').
Error, DHCPv6-Client, ID 1000, Your computer has lost the lease to its IP address <network_card_ipv6_Adress> on the Network Card with network address <network_card_Address>.