Error message eNM Tray stopped working

actually this is normally because of spyware and adware installed in system or some infection due to virus the OS is corrupt , u cant repair it except u have to restore ur system thru backup disc or the procedure below is recommended

Acer: When you first turn on the laptop and see the Acer logo screen, hold the ALT key and press the F10 key (you need to do this before the Acer logo disappears).

ur system will be restored to factory default state and ur all problems will be gone pls first backup ur data in case it is wiped off by the restore process

it is good to keep ur system updated thru widows update and latest drivers and utils thru acer support

ftp://ftp.support.acer-euro.com/notebook/aspire_5610/

pls rate me fixya if i have fixed ur problem