Wifi glitch with a malfunctioning desktop

[senan79]

I have a prebuilt desktop under warranty. I didn't boot and I called the manufacturer. After multiple visits by different technicians, the CPU, motherboard and the PSU were replaced. Then they had to replace the GPU. It is still not working. Now they are trying to figure out what to do. The last technician removed the RTX 3060 and the system is running using the IGP on Ryzen 5600G.

However the in-built wifi is not connecting to the router. It shows that access point with low signal strength and when I try to connect is fails. It tries on the 5GHz then 2.4GHz and then gives up. It was working previously. Somewhere between replacing all the parts a technician messed up. The last technician had basically taken the entire PC apart before putting it back together. I have already told the manufacturer about it. It is the manufacturer's headache now. I am sure that they will fix it.

While it is trying to connect, it seems to interfere all wifi connections. Netflix and Amazon Prime on the smart tv, youtube on phones, steam updates on the pc etc. If I add a usb wifi dongle and go online, the speeds are far slower than what it can go. The usb wifi connection also seems to be affected.

All of them start working well once the PC is shutdown. What can be the reason for the interference?

 

[senan79]

The machine has an internal wifi card with no external antennae. It has 1 more year of warranty. I am not touching anything inside until the year is over.

I think the model is not in production anymore. The service is provided by a contracting company. They check my machine, talk with the manufacturer for parts, get them and then replace them at my home.

 

[senan79]

https://download.lenovo.com/pccbbs/...index.html#t=EN/Rear_(topic)_T0000755037.html

Externally everything seems correct on my machine. Internally I don't know what the technician messed up.

The effect on other systems is something I didn't know was possible.

 

[senan79]

Externally looks fine.

Reinstalled drivers. No improvement.

 

[senan79]

One of the previous technicians came today. It was as expected, a disconnected cable. One of the two fine cables connecting to the internal wifi card was slightly damaged and the technician did not connect it due to that. He also failed to inform me about it.

Now the system is completely packed by the technician to send to the manufacturer. Had to format the SSD after getting data off it.

Don't know if I will get a rebate or an equivalent system. Systems with 12GB Nvidia cards currently are double the price of what I paid. Also the entire thing took 40 days from the start. My father is wondering how they will deal in case of a system bought by a business.

 

[senan79]

The whole thing is complete now.

Lenovo refunded me the full purchase price of the machine after I shipped the system to them. It took a month for the money to come to my bank account but it did arrive, I am not sure how it makes sense for them economically.

I am not too mad since I have another gaming desktop and a mac mini. But I have no other machine with NVIDIA card for ML/AI. Stable Diffusion and LLMs do work with my RX6600 but it is not as effortless as with RTX 3060.

Now I have to seriously think about replacing that RX6600 with something beefier. But the cheapest proper upgrade will be RX 9060XT 16GB, but it is almost twice as expensive as the RX6600. RTX 5060Ti 16GB is 2.5 times expensive as a RX6600 and higher cards are only theoretically possible if I spend all the refund money + some additional amount on the GPU. I would also need new power supply for the higher cards.

 

[senan79]

Not looking for old cards. Also no 8GB cards for AI/ML.

So 12 or 16GB cards - Intel is not available, AMD has 6700XT, 7700XT and 9060xt 16GB, NVIDIA has 3060, 4060ti and 5060ti 16GB.

A 3060 is just slightly faster then 6600 but it used up 180W+ when compared to the 100W limit for my 6600. Both 9060 XT 16GB and 5060Ti 16GB are the latest gen and provide more performance for the power they use up.