Hi
The subjected error message leads to RAM failure, Please find below the description on the same.
201-Memory Error | RAM failure. |
|
You may refer to below document for more information on your product. And you may check the Memory configuration supported on this unit.
http://www8.hp.com/h20195/v2/getpdf.aspx/c04168353.pdf
I hope that answers your question. 
I am an HP employee, the opinions expressed here are my personal opinions, not of HP.
Make it easier for other people to find solutions, by marking my answer “Accept as Solution” if it solves your problem.
***Click on "Thumbs up" button to the left side of my post to acknowledge the post ***