ISP?
Modem: make and model?
Router: make and model?
What exactly is that "weird error code" and what is the source of that error code?
Also:
"However, if booted into a secondary windows, every time find it working right away, and then restart and boot into the primary windows, "
Please provide more details. Do you mean a second computer and then the primary computer?
On the PC run "ipconfig /all" (without quotes) via the Command Prompt. Post the results.
Hardware Specs:
i5 10400
MSI H410M-A PRO
Ram 8x8 GB
m.2 (1st OS) + HDD (2nd OS)
Nvidia GPU 10th gen
Router - TP-Link TL-WR845N
ISP cable is connected first to their device (modem of a sort idk), then into the router. They call this broad band line yet, if the network cable is connected directly from thier device to my computer, then have to do a dialup every time after boot. And if using a router between the PC and their device, no need for dialup .
Error Code: This is what happened in brief: They connected their device to my PC (Win11) with a network cable (their device is connected to the broadband cable ofc). In the Network & Internet >Dialup settings - after plugging in the id, password etc. setup failed with an error code; don't exactly remember the code. They contacted their specialist who couldn't figure out the problem properly either, and they were very much unfamiliar with the error code. They told me the mainboard has ethernet hardware issue, (
which I already suspected way before, however though it was built-in driver issue; and tried to consult the MSI team on their official site, unfortunately didn't get any response). They strongly suggested a hardware issue with the mainboard. However, the network will work if they connect their device into a router. I argued, the router has to be connected to the PC anyway, so if there is a hardware ethernet/network problem on the board, it shouldn't work regardless - because either their
device OR both their
device + router has to go through the
mainboard-network-hardware, right?
Anyway, after setting up the router, the internet worked. Later, I fresh installed windows 10, as it was suggested, and in their absence discovered it was working without router (directly ISP-device to PC connection this time). And then stopped working after awhile giving that same error code.
Btw fyi, when I brought this PC, every time after windows setup, the ethernet adapter was missing in the Control panel > network & internet > Network connections. The realtek adapter doesn't work, had to download and install Intel PROSet adapter configuration utility.
The connection goes offline from time to time, without any change in all the router and ISP modem 'Internet is working' lights. For testing, without restarting / unplugging the router or modem, changed the boot order to the second windows on HDD, and found everything working. Then changed back to the m.2 windows again and it was working there too. Sometimes without changing the boot order, just unplugging and plugging in the router worked.
I think the router is bad also. Irrelevant, but the G.skill sticks aren't that good either, unstable if XMP enabled, got blue screen. And either the processor or the m.2 has issues also - STUTTER (irrelevant)! A total unfortunate or deliberate loss. Good for them I don't have bazooka, otherwise the retailer company would have had a day to remember.
ipconfig/all
Windows IP Configuration
Host Name . . . . . . . . . . . . : NWO
Primary Dns Suffix .....:
Node Type ......: Hybrid
IP Routing Enabled.......: No
WINS Proxy Enabled...... : No
Autoconfiguration Enabled.... : Yes
NetBIOS over Tcpip..... : Enabled
Ethernet adapter Ethernet:
Description . . . . . . . . . . . : Intel(R) Ethernet Connection (12) I219-V
Rest are physical address, IP and dns addresses, you wouldn't need those would you.