Ping problems caused my computer

So I bought a new computer- A HP Probook 4720s Intel i7 processor, 4 gigs ram, 500gb hd 512 dedicated graphics..... Thing is beast when it comes to fps

BUT here's the problem..... my ping is so unstable I can't play. I'm supposed to have ping between 34-40ish and I'm getting 100's spiking to 1000's.....

I still have my old computer and ping is good on that- so what on a computer can cause ping issues?

It can't be my network if it's fine on other computers.

All thoughts welcome!!

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