Originally Posted by
Nellah
Swapping OS drives between PCs is not fun with Windows 10 even for someone who's put together dozens if not a couple hundred PCs. You might be able to sysprep the drive before deconstructing your old computer though. If you don't have any important data on it, just wipe it; and if you do, get the data off, then wipe it. I've heard plenty of horror stories about old drivers messing things up in very creative ways.
Most guides online assume you don't have a sound card because Windows 7 and I think Vista removed a lot of support for hardware sound processing. Win10 has it back and I think Win8 did too. Plug the front panel audio into whichever device you're using to produce audio.
I'd consult your motherboard manual for that. If it doesn't fit it doesn't sit, so don't jam it in; manual should say what those pins actually are. You appear to be correct though, the header is probably #2.
Yes it certainly does, only the top slot on that motherboard is a x16 electrical, the rest are x8 and x4. Put the GPU in the top slot always unless the top slot is broken.
Could route them behind your motherboard. Doesn't look like you have a whole lot of other options.