If my internet connection is always slow and keeps crashing, what is the best way to diagnose my internet connection problem on my own?

overview of hardware interfaces,details of a single network interface, same as: diagnose hardware device info

generated all possible log entries,package refill date,

1- reinstall the network adopter drive

2-update it with latest version

3-go to network connection window

4-right click on the default  connection from which you connect to interent

5-click on connection diagnose.

all the best.

Please check your internet connection 

Check the Internet Service on your Computer

Last to Check Troubleshoot  problem

The goal is to plug your device directly into the modem via the hardline of an Ethernet cable and establish a connection to the greater Internet. If you’re using an actual computer, be it a laptop or desktop, it’s best to use a very basic connectivity test such as pinging Google’s DNS servers. You can do so by opening up a command prompt, “cmd” in the run box, and typing “ping 8.8.8.8”. If you get a response then you know your modem is communicating with the outside world. For devices that you can’t easily send out a ping request, try performing a simple network connectivity test like prompting the device to check for software updates or loading a streaming video file. While performing the most basic test possible, like a ping, is ideal any method available to you is worthwhile.

Check your Modem / Router is properly Functioning or not.

Reset you Modem / Router using "Reset Button" 

or

contact your ISP Internet Service Provider to dignous the Internet Connection

First Of all Please Check the error and Later it is Usually Shows about the IP Defects, so we Should Check the IP Address correctly, then Restart the Router, the error can Diagnose................

This means that you either have alot of data,or a virus.

Firstly disconnect your system from the router and check wether the router is conneceted properly and try it back on if it still keeps crashing then yo will have to resinstall the network driver accordingly.

First of all you should check your ping Time, if your ping time is very high then you should check your cable, if wireless they check your distance from the router.

Check cable connection must not be damaged.

Detect hardware issues.

Reboot Computer and wireless router.

If still not working, router,PCs wifi adapter or operator may have saoftware or firmware problem which can be fixed simply by rebooting.

Change or use alternate IP address.

Restart the laptop and routerRestarting the laptop and router is the basic and step to follow when unable to connect to wireless networkThen Flush the dns by using the below commandRun > cmd > ipconfig /flushdnsThen disable and enable the wireless connection from Control panelThis steps most of the time will fix the wireless connectivity issuesIf still the issue is existing then turn off the firewallThen uninstall the wireless drivers from device managerPlease be careful while uninstalling the wireless drivers from Device managerWhile uninstalling make sure to uncheck Delete the driver software for this deviceThen Restart the machine again it will appear under Network adaptersThe above all the steps will fix the Wireless connectivity issues