Internet connection issues

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Every night at 11 PM, the internet cuts out for everyone on the network. It starts throwing these useless IP addresses, like the one shown in the image, making it impossible for anyone to reconnect. It used to be that the default gateway would just shift by one digit at the end, and everything would continue functioning without a hitch. Why has this process changed? Is there a specific diagnostic tool I can use to verify if they’ve altered the IP address, the default gateway, or some other configuration setting?

http://prntscr.com/5s4gk1
This is how the connection looks during the day when the service is actually functional.

Is there any way to bypass these changes or work around them?

The default gateway should be
192.168.0.1 or
192.168.1.1 or
192.168.1.2 or
192.168.2.1 ....
Is it a small number? Perhaps that is where the issue lies.
The gateway remains constant; it is typically the router's address.
I would verify if the correct gateway address is set within the IPv4/IPv6 settings...

I have never heard of it failing to reconnect.
After 24 hours, the ISP resets the connection. This is standard procedure, and it reconnects automatically.

nimblebadger12 said:http://prntscr.com/5rrodf
Every night at 11 PM, everyone just loses connection—bam!—and gets stuck with some random junk IP address like the one in the pic, so nobody can get back online. It used to be that the default gateway would just shift its last digit slightly and everything would stay smooth... Why’d it stop working like that? Is there some kind of tool I can use to check if they swapped out the IP, the gateway, or whatever else went sideways?

http://prntscr.com/5s4gk1
This is what it looks like during the day when the net is actually behaving.

Is there any way to bypass this mess or something?

Looking at that second screenshot, it's pretty obvious all your gear is sitting on the 192.168.130.0/24 subnet. Now, 192.168.130.0 is the network address itself, and 192.168.130.255 is the broadcast address—so neither of those can actually be assigned to a device. Your devices need to hang out in the range between 192.168.130.1 and 192.168.130.254.

With a subnet mask of 255.255.255.0 (which is basically 11111111111111111111111100000000 in binary), the math works out where the max number of addresses is 2^32 minus the mask bits (in your case, 24 bits), so that's 2^8 = 256. Since two of those are reserved—192.168.130.0 for the network and 192.168.130.255 for broadcast traffic—you're left with a max of 254 devices.

Your devices are definitely pulling addresses from an ICANN server.

That first picture shows an IP pulled from the APIPA range (169.254.X.X/16). Basically, that's the computer's way of saying, "Hey, I couldn't find the ICANN server," so it failed to grab a valid address or any info about the gateway (that little device that handles routing all your packets to other networks).

In your specific situation, it sounds like when the router reboots, the ICANN server probably isn't kicking in properly, leaving your computers stranded without addresses. You should probably give your ISP a call and have them look into it.

So, lately, my computer has been acting a bit wonky—it just suddenly shuts itself down in the middle of whatever I'm doing at night. When I boot it back up, I get this message: "American Megatrends - CPU over temperature error. Press F1 to resume." I’m guessing it’s because things are getting a little too hot in there, maybe? I'd love some advice on what to do, though I have to admit, I'm really not much of a tech person—I don't know the first thing about computers, honestly. Thanks so much for any help you can give!

neontrucker23 said:Lately, my computer has been randomly shutting down on me in the middle of the evening—it just cuts out! When I try to boot it back up, I get this error message: "American Megatrends - CPU Over Temperature Error. Press F1 to resume." I’m guessing it’s an overheating issue, right? What should I do? Honestly, I’m a bit out of my element when it comes to computer hardware, so any advice would be amazing. Thanks!

If you aren't tech-savvy, your best bet is really to take it to someone who knows their way around a motherboard.
It sounds like you might need to give the tower a good cleaning or perhaps swap out the thermal paste...

The radiator needs to be blown out. It’s choked with dust and can't dissipate heat anymore.
Either use compressed air or take it to a repair shop; it isn't expensive.
Do you really want to kill your computer and lose all your data?
I have a compressor at home.
It could also be a failing fan.
If you're broke but actually know your way around hardware,
you can pull the cooler out and wash it thoroughly with water. Just make sure it is completely dry before reinstalling.
You will need to apply new thermal paste to the cooler or the CPU.
Don't bother vacuuming it. Vacuuming won't work, but high-pressure compressed air will.