What is most likely to cause this packet loss?

Question

This question: Can a software cause a huge ping response is what made me realize that I have a network problem.

As you can see here:

C:\Users\*****>pathping google.com

Tracing route to google.com [74.125.226.142]
over a maximum of 30 hops:
0  *****[192.168.0.100]
1  10.245.129.129
2  videotron-tek.teksavvy.com [206.248.155.109]
3  videotron-tek.teksavvy.com [206.248.155.109]
4  2150.ae1.bdr04.tor.man.teksavvy.com.packetflow.ca [69.196.136.164]
5  72.14.212.134
6  209.85.255.232
7  209.85.250.7
8  yyz08s14-in-f14.1e100.net [74.125.226.142]

Computing statistics for 200 seconds...
        Source to Here   This Node/Link
Hop  RTT    Lost/Sent = Pct  Lost/Sent = Pct  Address
0                                           Sektor [192.168.0.100]
                           10/ 100 = 10%   |
1  ---     100/ 100 =100%    90/ 100 = 90%  10.245.129.129
                            0/ 100 =  0%   |
2   27ms    13/ 100 = 13%     3/ 100 =  3%  videotron-tek.teksavvy.com [206.248.155.109]
                            0/ 100 =  0%   |
3   26ms    12/ 100 = 12%     2/ 100 =  2%  videotron-tek.teksavvy.com [206.248.155.109]
                            0/ 100 =  0%   |
4   24ms    19/ 100 = 19%     9/ 100 =  9%  2150.ae1.bdr04.tor.man.teksavvy.com.packetflow.ca [69.196.136.164]
                            0/ 100 =  0%   |
5   26ms    19/ 100 = 19%     9/ 100 =  9%  72.14.212.134
                            0/ 100 =  0%   |
6   25ms    10/ 100 = 10%     0/ 100 =  0%  209.85.255.232
                            5/ 100 =  5%   |
7  ---     100/ 100 =100%    85/ 100 = 85%  209.85.250.7
                            0/ 100 =  0%   |
8   22ms    15/ 100 = 15%     0/ 100 =  0%  yyz08s14-in-f14.1e100.net [74.125.226.142]

Trace complete.

I have a whole lot of packet loss only when doing a pathping on google.com.
What is most likely to cause these packet losses?

• My cables
• My LAN Switch
• My modem
• My router
• My ISP
• Ethernet collisions

1. My cables are pretty old but still, can cables really make you lose that many packets? (average 13%)

2. My switch could be the cause, but I plugged myself into the router directly to test and I still got the same results.

3. My modem: I guess I could change it, but since I switched to 20MB, I got a new one so it shouldn't be a problem either.

4. My router is a D-Link Dir-655 Gigabyte, so it is not so old. Do routers accumulate data that stays there even after a full reset? Because that could explain, that with the time and the usage I made, I should have changed it by now.

5. My ISP: I don't want to get there. You all know I won't get what I'm looking for unless I change every single part on my side and even then I would have to wait for a very long time to maybe get a chance to see a solution.

6. Ethernet collisions: I have 12 devices on wifi/cable at home. Maybe my router isn't able to support that many devices syncing and it causes problems with it.

Is there something that comes out of all this? Because I don't want to be buying a $200 router or a new switch or even open a painful case with my ISP support before knowing if something obvious is coming out of all this.

Solution

Turns out it was my Ethernet Card for some reason.
Ruled out all of the options above and then bought a "usb wi-fi" key to bypass my ethernet card to see if it was causing the losses.

Turns out it was.