My laptop was recently sent off for repair for a damaged LCD screen. The repair center replaced the LCD screen, battery, MoBo, and WiFi card. Since then I have been getting intermittent download speeds - ranging from no connectivity up to 70% of download speeds I get on every other device on the network.
I have updated the BIOS and all drivers (including the latest WiFi&Bluetooth drivers from this site). I have also tried a reset of modem & router. I also uninstalled Smartbyte diagnostic tool (I read on other forums this has been known to cause problems).
I bit about the system:
Dell Inspiron 15-7579
Windows Home 10 - 64bit, version 1803, build 17134.471
Intel Dual Band Wireless AC-3165#2
Also attached is the SSU for the system.
Any ideas on what could be causing the issue? Hardware? Software?
The laptop is under service warranty with a major big-box retailer. But this would be the fourth time to send it in and it seems like each time it comes back with a new and interesting problem. If I can at least confirm it is, in-fact, defective hardware/repair then I feel a little better about sending it off again.
Good catch regarding the system model. Prior to sending for repair, the system model was showing as Inspiron 15-7579. After the repair, the Service Tag was updated and the "reported" system model for the new service tag is Inspiron 13-7378. My guess is they used refurbished hardware during the repair. Do you think they may have dropped in incompatible hardware and that is causing some of the problem?
The drivers for the two links you shared seem to be the same...at least from the file name/date. I performed a clean install for the drivers downloaded from the current configuration (Inspiron 13) from Dell (using their tool to "detect current configuration").
Unfortunately it did not seem to resolve the issue. Should I try the one for Inspiron 15 as well? Other suggestions?
A hearty thanks,