Suspecting PC is hacked in even using Ethernet Network

Hello There!

I have this PC that has Windows 7, which will be phased out by 1/2020, and I have had issues with it being inoperable for a few minutes when using the wireless network: the cursor would disappear from the screen and there would be a loud shrieking noise. It would then stop and the cursor would appear again. This often happens when I am watching videos, casting, or sometimes when I am just pausing to do something else for the time being.

I thought it could be that someone is being mischievous and tapping into my wireless frequency and messing around with my PC. So I upgraded my router and modem and changed everything to wired Ethernet network. And this time it is even worse; those things I have described earlier would happen and it would never stop and I would have to turn it off and on using the on/off button to reboot it that way, not the shutdown method.

I spoke to my ISP and they said everything is fine on their side. They said to just use the modem, but I have to use the router for another equipment, so the modem has only 1 port.

What do you think the problem is: The ISP network line, Windows 7, the upgraded router and modem, or the PC?

On the security side for the wired Ethernet network, what settings should be changed? Should I block any ports? I am using only Windows 7 Defender and nothing else. I thought using the wired Ethernet network would be much more secure but still the same.

What are the different ways that someone can remote log into my PC and see what I am watching and doing on my PC and interrupt my internet session? I am certain my PC is being hacked.


Me Clueless!

 

Choose a router that has AP Isolation. That feature prevents wireless connections from tampering with another connection wirelessly.

Since your defence only consists of Win 7 Defender spyware protection, it is not enough. You should install Win 10, as it comes with Windows Defender, which is an antivirus. Win 10 upgrade from Win 7 is still free - all you have to do is download MS Media Creation Tool Use it to Generate a Windows Setup DVD / USB memory stick and boot with that. Type in your Win 7 Activation Key. Choose Setup > Custom and delete all partitions and then let it continue using the newly unallocated space. At least try Win 10 to see if the problem stops - it is the least cost solution; or you could be spending money on third party AV needlessly.

Does the shrieking noise only occur while you are online and watching videos ? Does it happen when you are not using the internet ?

Make sure the problem is not self inflicted - delete all pirated software, cracks and keygens obtained thru bittorrent and such. Most software obtained thru bittorrent contain malware. And malware, if self installed, using an admin account, can do anything to your PC and is terribly difficult to get rid of. That's because you gave it admin rights.

The way to combat hack attacks is to start with a trusted base (from Windows Setup) , harden Windows, all done offline. Then create a drive image. Only then, go online and download your software setup programs. If you get hacked again using a different technique, you can then quickly restore the trusted drive image (10 mins) and adjust your defences. You can consult the link below in my signature section. It takes around 4 hours to perform all the hardening steps. The instructions are free and complete for Win 10 Home.

 

What about using the wireless router and turning off the 'Radio'? I don't wish to use the wireless. I am using the wired network at this time. Should I forget about the wired network and use the wireless and set the AP Isolation? I think the router I have has this option.

My laptop has this processor: Intel(r) Core(TM) 2 Duo CPU. It is not the latest technology such as I3, 5, 7, 9, so not sure if it would be better to upgrade or just get another one with the I7 and Windows 10.