Model bdxk100kc blu-ray player won't even play any discs...keeps saying loading, all wiring to correct ports, cleaned discs...what else can we do???

Blu-ray Disc Association (BDA) said blu-ray Discs with capacity up to C will not be compatible with existing blu-ray players. Although manufacturers such as Sharp and TDK have developed 100-gigabyte blu-ray discs, these large-capacity discs are impractical at this stage because existing Blu-ray players cannot handle discs larger than 50GB.

Why don't you play blu-ray on PC. It's quite easy and what you should do is to read disc with drive and play it with free Blu-ray player software. Here is the recommendation. You can have a check.
www.leawo.org/blu-ray-player/?fixya=1410

What you need to do is to reset your Blu-ray player in the first place.
1. Remove the Blu-ray disc from the Blu-ray player' drive.
2. Power off the Blu-ray player and disconnect wire.
3. Unplug the Blu-ray player from the output TV and disconnect the cable.
4. Wait in patience and remain the Blu-ray player power off for minutes.
5. Plug the Blu-ray cord and connect the Blu-ray player with to the TV.
6. Power on the Blu-ray player.
7. Insert the Blu-ray disc to the player one more time.

For more details for the solution, you can check on this tutorial:
Why Won't My Blu-ray Players Play Blu-ray Discs

I'm having the same problem with regular dvd's. it'll play blu-rays o problem