If you’re still seeing the black screens, you may have some remnants of the Synapse software. The specific files you may need to hunt down are included in this post:
If you continue to experience issues beyond removing those, please add a DxDiag here 
Click here to show/hide DxDiag instructions
- Press Windows Key + R, then type DxDiag and press Enter.
- In the DxDiag window, click Save All Information.
- Name the file “dxdiag” and click Save.
To add it to your reply here:
- Open the text file and copy all of the text.
- Paste the text in your reply.
- Highlight the pasted text and click </> on the post editor.
If your DxDiag does not fit in one message DO NOT shorten it. Instead, post it on Pastebin.com and provide the hash code (the numbers/letters after the .com) in your reply, not the entire link because you can’t post those.