If the Acer site is confusing or the drivers there are outdated, use Windows built-in tools or a 3rd party trusted source.
The problem was the wireless adapter.
: First, find your Acer Aspire E 15's model number. This can usually be found on the bottom of the laptop, on the box it came in, or in the user manual. acer aspire e15 wifi driver
Some owners got so fed up that they physically opened the Aspire E15’s easy-access bottom panel, unscrewed the tiny Qualcomm card, and replaced it with an Intel 7265 or 8265 for $20. After that, the laptop worked perfectly for years.
Go to Device Manager → Network Adapters → Qualcomm Atheros QCA9377 → Properties → Power Management → Uncheck "Allow the computer to turn off this device to save power." This helped but didn’t fully stop Windows from re-breaking it after major updates. If the Acer site is confusing or the
In the end, the Aspire E15 was still a great laptop. But its legacy is a reminder that sometimes, the tiniest piece of software—a driver—can turn a "budget king" into a "troubleshooting project" for a weekend.
To keep your Acer Aspire E15 Go to product viewer dialog for this item. This can usually be found on the bottom
When you first booted up a new Acer Aspire E15, everything seemed fine. You connected to your home WiFi, downloaded Chrome, and started installing updates. Then came the first reboot. Suddenly, the WiFi icon in the taskbar turned into a red "X" or a globe with a strike-through. The "Available Networks" list was empty. Device Manager showed the Qualcomm card with a tiny yellow exclamation mark—code 10 or code 43.