Error Events 29 and 17 ...

[suresh_54]

my system is restarting twice a day

 

[ksiemb]

my system is restarting twice a day

At the same exact time each day ? Check scheduled tasks to see what might be in there that could cause a restart.

What does the infor in your post title mean ? You looked in event
viewer, and that was the only (non-uesful) info provided ?