Computer Crashes when I plug network cable in

For about the last 6 months my computer seems to be quite tempramental. When i move it between uni and home and first boot it up it likes to repeatedly restart leaving a few seconds between each time it does it. This usually lasts for about 20 minutes then it runs perfectly (besides the odd crashes). However, the most recent time I brought it up to uni, about 3 weeks ago it didn't want to stop doing the restarting but only when my network cable is plugged in (I can get it running offline but as soon as I plug the cable in it crashes). I formated it with a fresh install of windows and the problem is still there indicating it must be a hardware problem.

Yet I have no idea where to start to look at what component/s need replacing. It could even be a loose fitting I guess.

Can anyone offer any help?

Cheers.

 

Sounds like a contact (particularly grounding) problem, to be honest. Could be the power supply, given that it eventually seems to settle down as the system warms up, alternatively the motherboard. However I would try and re-seat all the cables and cards to be sure.

 

Try installing latest network drivers