Hi Dyuthin

We have had this happen a few times, it's been a while but try
Doing a "COLD START"
(Press & hold "Graph Go/Stop button while switching the Monitor on, hold button down for a couple of seconds, the Monitor screen will flash then come on)
Alarms may reset to default and Patient data will be lost, so you will need to check / reset Alarm settings.

Hope this will help,
Regards,

Mark

--
"Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it.” (Mark Twain)