My Aspire A0725 is 6 years old,

PACSMAN

Stored for 4 years. Want to update drivers, especially WLAN. No driver available on acer site.
WLAN will not connect to 5ghz

RanY2J

The product listing: https://www.acer.com/ac/en/ID/content/support-product/4253;-;AO725

However, for connecting to 5Ghz, the laptop should have the capability. The laptop should have a 5Ghz adapter to perform this. If not, you can split the frequency into 2.5/5Ghz and then use it. A good option and a fair point.

To do this, go to your router page *Default gateway* and split the frequency. 

PACSMAN

Thanks for the link, i see the drivers. Its not only 5ghz, its 2ghz connectivity dropping out. 3 other laptops are ok.
Will download Broadcom drivers and try 

RanY2J

PACSMAN said:

Thanks for the link, i see the drivers. Its not only 5ghz, its 2ghz connectivity dropping out. 3 other laptops are ok.
Will download Broadcom drivers and try 

Surely, the logic is that 5Ghz transmits high speed broadband but the range is low whereas the 2.4Ghz transmits 100MBPS< but has a longer range. This is called the dual band. If 2.4Ghz drops as well, the channel might help here or altogether a better router investment.

2.4Ghz might work on channel 1, 6, 11. Also if the router is closer to another radio device or any devices that emits waves (sound) possible, it might affect the WiFi as the router emits radio waves. Try the driver update but if it doesn't help, it is safe to say that you should be looking at all your devices and if all of them drops for the matter.

Good luck and hope that answers the query.