The Internet is periodically disconnected. Why? What reasons?

Typical question

Hello.

On my computer, the Internet is periodically disconnected (about once every half hour to hour). You have to reboot it to restore the connection.

I checked for viruses, everything is OK (Kaspersky 2019). My OS is Windows 7, 64 bit. By the way, the Internet disappears not only over the wire, but also over Wi-Fi (I tested it on a laptop and phone). What do you advise, what are the reasons for this?

Hello.

The question is too many-sided, and it is difficult to give a concrete answer to it (there are quite a few reasons: there are both hardware and software). Below I will give a few of them that I often came across myself (at least I recommend starting with this, fortunately, in more than half of the cases, this is the reason) ...

To help!

How to find out the speed of the Internet on a computer - //ocomp.info/kak-uznat-skorost-interneta.html

What to look for if the Internet is often disconnected

👉 Moment 1

Many users use budget routers from D-Link, TRENDnet, etc. for home Wi-Fi networks. Under high network load (for example, with active torrent downloads), they may not cope and go to reboot. Of course, the Internet will be disconnected for 20-40 seconds. (the time it takes for the router to establish a new network connection).

Moreover, in some cases, such a thing happens with more expensive devices from Tenda, TP-LINK, etc.

What can you advise:

limit the download speed in a torrent client, for example, in uTorrent (determined experimentally, depending on the nature of your router's work);
Limiting downloads in uTorrent
change the encryption settings in the web interface of the router (thereby we reduce the load on the router chip and it generally works more stable). More details about it here;
change the router's firmware (i.e. firmware). In some cases, it is possible to significantly improve the quality of the network;
Screen from the Tenda router settings
replace the router with a more efficient model (details on choosing a router).

👉 Moment 2

In some cases, the computer's network adapter can go to sleep, and, of course, the Internet connection is broken ... (especially, this applies to laptops). I would recommend disabling disabling the adapter altogether to rule out this option.

How to do it:

go to the device manager;
expand tab "Network adapters" ;
right-click on the adapter and open properties (if you do not know which adapter to choose, do it sequentially for all devices);
Adapter Properties - Device Manager
in the tab "Power Management" uncheck the box "Allow this device to be turned off to save power" ;
Power management - uncheck the box and prohibit turning off this device
save your settings and restart your computer.

By the way, if you have a laptop, please note that there may be specials in the driver settings. modes for saving power and automatically adjusting a number of parameters (see screenshot below, Lenovo Control Center). Of course, you need to turn off the energy saving and set the standard mode of operation (or productive).

Power supply - LENOVO laptop

👉 Moment 3

If problems with the Internet occur only at certain times (for example, in the evening or on weekends), this may be due to the infrastructure of the Internet provider. The fact is that during rush hour a lot of people go online and there can be overloads: the speed on the network drops, downloads are often torn, etc.

Anyway, check with technical support what is happening and is there any preventive work - definitely worth it ...

👉 Moment 4

Check if you have installed the "native" drivers from the website of the manufacturer of your device (especially if the network breaks only on this particular computer, and on other devices everything works as usual).

It is not uncommon that the selected and installed Windows driver for the network card does not work correctly (does not allow the adapter to work stably).

How to check and update:

if you have a laptop: determine the exact model of the device and download the required driver from the manufacturer's website;
if PC: how to find and update the driver for the Ethernet controller;
you can also use Driver Booster or Driver Pack Solution to update drivers automatically.

Driver Booster - 9 outdated drivers found, and 4 game components

Driver Pack Solution - Sample Update Recommendations Window

👉 Moment 5

With this problem, I would also recommend checking the work of the antivirus. Some products, when exposed to max. the level of protection (Norton, Panda) at one time blocked not only access to the Internet, but also the connection of flash drives, the opening of files ☝ ...

At the time of diagnostics and search for reasons: disable the antivirus. Fortunately, this is not difficult to do with most modern products (1-2 clicks of the mouse on the tray icon are enough ...).

Disable Avast antivirus for 1 hour

👉 Moment 6

Well, and the last thing I would recommend paying attention to is the version of Windows OS. Often, many are faced with slow network performance and breaks just after reinstalling the OS (choosing some kind of assembly from "folk" craftsmen, where, for example, a number of services are disabled).

Today, you can download the ISO image for Windows 10 from the official Microsoft website. How this can be done is described in one of my previous articles, I give a link to it below.

👉 Help!