Why does the Internet constantly disappear on a laptop when working via Wi-Fi (Windows 8.1 + Broadcom + TP-link)?

Question

Computer networks

There is a bunch of laptop - router. At the same time, the Internet on the laptop constantly disappears. There is a connection to the router, but the connection status is "Without access to the Internet." It happens that the time between losses is long (over 10 minutes), but most often at the level of 2-3 minutes. Very rarely, when it works for a long time (more than an hour).
At the same time, the laptop itself works with other points without problems (D-Link, Glitel, TP-Link, etc.). Other devices work with this router without problems. When there was 7 on the laptop, there were no problems either. When I put 8-ku, then after the first installation this problem appeared. I decided to immediately reinstall from another distribution, but the situation has not changed. I shoved it into some glitch that I can quickly fix and left 8-ku. Did not work out.
Disabling and enabling the adapter, connection diagnostics helps to restore the connection. The latter at the same time finds an error with DNS. The magazine is silent.
When disconnected, the routes do not fly off, but the point itself stops responding.
Notebook:
Model: Lenovo B580
- OS: Windows 8.1 (MSDN with all updates)
- Wi-Fi adapter: Broadcom BCM94313HMGB with Bluetooth on board. The last one is disabled. Drivers latest.
Router:
- Model: TP-Link TL-WR842ND v1
- OS: DD-WRT v24-sp2 (03/25/13) std - build 21061
What's done:
On the laptop:
- Updated drivers for the card
- Updated BIOS, after which it worked Bluetooth
- Disabled power saving modes for the card
- 802.11b mode was set.
- Now everything is on the machine
On the router:
- Put DD-WRT
- Set the mode 802.11b.
I am sad. I don't want to downgrade to 7. But where to poke, I did not find.

Answer 1

The same problem) HP Pavilion dv6 6b56er laptop, MikroTik RouterBoard 951Ui-2HnD router
The problem also arose with the installation of 8k) I installed official drivers under windows 8.1. I updated everything that is possible) in the apartment there are also 3 phones, a tablet and 1 more laptop, also on 8k)) this is not observed anywhere else)
I found the article f1comp.ru/internet/status-ogranicheno-v-windows-8-...
Helped solution:
"People for those who have a Broadcom 802.11n adapter, the solution was found, they themselves suffered for a long time. Open the Broadcom 802.11n device manager adapter-properties-updating drivers - search on this computer - select from already installed ones - UNCHECK only compatible devices - select 5.100.245.200 from the list and bet. Does everything work?
And don't update the driver like this is the only driver without a glitch for Windows 8 and 8.1 today, and Microsoft technical support is silent about this."

Answer 2

Not an option at all) The problem is the same - TP-Link WR740N router, Lenovo V580 Beech, Wi-Fi adapter - Broadcom. Loses internet at different time intervals. Sometimes every 5 minutes, sometimes all day without breaks.

Answer 3

People, tell me how to solve the same problem on the seven? It is on the laptop that Wi-Fi is torn. Laptop lenovo g770. And until recently, everything worked fine for a very long time. Tried with another router - all the same.

Answer 4

The firmware helps, to the American one https://www.google.com/url?sa=t&rct=j&q=&esrc=s&so...