It sounds like you might have major problems.

Now on to your computer issue:
I know you can count to 4, proof is in your name. That's the limit in seconds for vox in channel and range.
Are you running sound through your GPU or Motherboard? What is your Mobo/CPU/GPU setup? Have you tried a Windows directory utility like Advanced System Care? (these cant help or hurt) In my experience this works well for less sophisticated users, that just want the darn thing to work right, but can take resources if running in background. However, it does have a "Gaming" mode, even the free version.
My suggestion with out knowing answers to this would be to try plugging in your headphones/mic inito a Mobo specific location... for sure on the front of box.
<S> HACK

GFC AWOL