So, another update:
I tried reinstalling everything and I got my recording back as normal, now there's no display problems.
Now there's still one problem.. The render problem, I still can't render in VideoWave,
My computer specs is:
CPU - AMD A10 7700K APU with Radeon R7 Graphics 3.40GHz
GPU - Asus Radeon HD 7770 1GB
RAM - 8GB
OS - Windows 8.1 64-bit (6.3, Build 9600)