need help with my connection

I come here in hope we will able to solve my problem.

first, I am from israel and my english is very bad, so I am sorry for my poor writing.

I have a problem that from specific time my internet connect and disconect every 10-15 minutes. its happen only afternoon and only to my PC.

other pc on networkworking fine. i tryed to switch cables, reset the connection, reset the drives and etc....noting work.

they weird thing is that if i connect other PC to this connection its work and Its fix my connectiong to for 30-200 minutes.
I mean, if i have the disconnect things and high pings i just need to connect the cable to other device and then connect it to my pc and it solve the problem for 1-2 hours.

But reseting the router/connect not make it stable again. and this problem happend from my wired and wireless connection.

I think that i got Virus or someone that enter to my PC afternoon and used my mac address to do something with my internet\do terror to me.
but how can I check it? I want to solve it without reset my pc.

BTW i turn on sniffer and saw my router address do port scan to all my address rang. i dont know if TP-Link router do it or someone pretend to be him.

I am sure its high level of problem then check cables/change dns/dhcp w/e.


Thanks,
Or

 

So it is clearly an issue with your PC not with router.

I believe you mentioned connecting a different PC to the current problem making connection and that PC is working fine. So clearly we can pin point the PC as the reason for the issue.

Since you have changed the cable and the issue persists, you might think about the possible corrupted NIC (LAN card). Try to ping loop back address.

ping 127.0.0.1 and check if you get valid replies. Also check the flow control settings and duplex settings on your NIC.

 

hello sijugk and thanks for the replay.
Yes, its clearly a PC issus like you said. but i dont know if its hardware problem or software.

my loopback address work fine, and i restart all the network setting and even reinstall the drivers.

its like sometime the port just close off for 3 secend, sometime they drop high rate of packets and sometimes its fine.

i really thing its a malware beause its start fro afternoon every day, its with the wire and wireless network, and i saw someone scane my ports trough sniffer.

but before i will made a new topic in the malware forum, there is anything esle i can do to check from where its come from?

Thanks, Or


btw, how i check the flow control settings and duplex settings on the NIC? if reinstall it on default setting its should be fine, no?