Windows 10: laptop suddenly needs ethernet?

i opened my laptop up today to find it no longer connects to any wifi and is requiring an ethernet cable? it was running fine with wifi for the past year i’ve had it

:)

 

Ethernet connection/port on my laptop

Thanks for the suggested solution which I tried. My feedback:

• Update download was completed but installation did not complete and the message popped up that stated that update is not compatible and cannot be installed.

Info sought in your mail is as follows:

• Which build and edition of Windows 10 is installed on your computer?
  • Window 10 Pro
  • Version 1709
  • OS Build 16299.192
• What is the make and model of your laptop?
  • Dell Alienware
  • 15" Laptop
  • System 64 bit os x64-based processor
• Are you experiencing the same issue even when you are using another Ethernet cable?
  • yes, tried different cables
  • (also same ethernet cable & connection works on my mac notebook)
• Have you made any changes to your computer setting before this issue occurred?
  • Can't say with certainty about changes, if any, made. Normally i don't fiddle with the laptop systems.
  • ethernet port was working just fine and suddenly became dsysfunctional about two weeks back.
  • Checked Network adapters in the device manager which highlights Killer E2200 Gigabit Ethernet Controller with a yellow mark. Also checked network adapter driver which states that installed driver is the latest.

 

Best laptop under $800??

Well the last one I suggested seems to be the best for 650$

EDIT: to facilitate your search...

Laptop GFX benchmark list

Laptop CPU Benchmark list

 

Cannot connect to ethernet no valid ip configuration

We appreciate the information you've provided. We'd like to confirm the results after following the steps on the link provided on our previous post.

Meanwhile, to isolate your concern, we suggest that you check the following:

• 
  If the Ethernet port is clean.
  
• 
  If the end of RJ45 (Ethernet cord) is still intact.
  
• 
  If available, test the RJ45 (Ethernet cord) to your other device and check if issue persists.
  

We look forward to your reply so we can assist you further.