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sdruss

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Keep Losing my PC Desktop Internet Connection

I'm currently running MS Windows 10 on my 3-year old HP desktop computer at home. For whatever reason, multiple times during the day I need to soft-boot my computer because my internet connection has been lost. And yes a simple reset (cntrl-alt-del) seems to do the trick.  My internet connection is via my AT&T cable gateway, where my CAT-5 cable is plugged directly from my gateway to my desktop computer.  Any ideas or recommendations.  Also, how can I check to make sure nothing malicious is happening over my network?  Thanks in advance.
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strivoli
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As a first step I would start monitoring both the Router and a HOST on Internet. PING constantly the Router which is the Gateway (run IPCONFIG to discover your Gateway). PING constantly for example 8.8.8.8.
Results of these PINGS should help us giving you more details why it happens.
ping 8.8.8.8 -t

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Login to your gateway IP is usually: 192.168.1.1 , but may be different.
You can check from a CMD prompt by typing IPCONFIG
 The Details I show will be different for you.
 Look for Gateway under the : Ethernet adapter Ethernet:
  Connection-specific DNS Suffix  . : fios-router.home
   Link-local IPv6 Address . . . . . : fe80::70d1:ae72:44f9:f735%19
   IPv4 Address. . . . . . . . . . . : 192.168.1.6
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.1.1

Once you login to the Gateway you can check:
 FIREWALL Section,  there should be a Security Log that will show all the activity that has taken place.

System Monitoring, System Log which will show the Ethernet connection History,
 Like below:
Jan 14 14:20:34 2021dhcpcd[1818]info<134>eth1: IPv4 renew in 3600 seconds, rebind in 6300 seconds, expire in 7200 seconds
Jan 14 13:20:34 2021dhcpcd[1818]info<134>eth1: IPv4 renew in 3600 seconds, rebind in 6300 seconds, expire in 7200 seconds
 Which shows my Gateway refreshes it's connection hourly.
>>  And yes a simple reset (cntrl-alt-del) seems to do the trick.    <<  ??  that only opens task manager - right?
so what does the trick  then?
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sdruss

ASKER

  I see the following message repeated over and over in the firewall log.  What does this mean?  
           
noticeJan 18 14:07:27
IN=br1 MAC=dc:7f:xx:xx:xx:xx SRC=138.197.???.?? DST=76.252.???.?? TTL=239 PROTO=TCP DPT=8053 Drop Unknown Incoming Packet

Also, see "Invalid State" messages ever so often.  Any ideas?
still waiting for an answer to my Q above
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ASKER

Nobus, a simple soft reboot seems to reestablish connection.  I don't do anything else.

what is then a soft reboot for you?
i still can't follow your actions, sorry
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ASKER

Nobus,

Ctrl+Alt+Delete - a reboot on my Windows 10 box??  Don't know how else to describe.
as i posted CTRL + ALT + DEL opens task manager  How to open the Task Manager in Windows 10 (all shortcuts) | Digital Citizen 
it does NOT do any booting hard or soft - unless you changed the shortcut code to other program?
see 2nd picture (under CTRL+ALT+DEL)
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Sorry, my bad.  A Restart.
ASKER CERTIFIED SOLUTION
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nobus
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just curiosity - is it solved?