No worries.
Please check out the following link
http://scn.sap.com/docs/DOC-28294
At the bottom there is details for using Pageant and Putty for accessing your HANA box at OS level (Linux command level)
From there you can try and manually stop and start the HANA DB.
- ./HDB stop: Command to stop HANA DB
- ./HDB start: Command to start HANA DB
I had to do that frequently with earlier Revisions of HANA running on AWS, but haven't needed to do it that often these days.
Hope that helps for you.