My HTC Tattoo keep restarting

Hi,
I'm using HTC Tattoo from last 3 weeks. Today all of sudden It started to keep restating. Now no matter what I do It keeps restarting. I can charge it using USB but unable to see anything in Computer. Has anyone faced this problem or any idea how to fix this?

Tack

 

I've also noted that my Tattoo sometimes, at random, restarts. I'd say it's happened 3 or 4 times since I got it a month ago. I have no clue to why or when and can not se any pattern...

Anyone else?

 

Have u tried to activate the "USB mode" else u wont see it as a device on ur computer.

 

This has happened to me with my Magic as well. I think the problem was that I used TasKiller and killed all processes very often. I'm not sure that was the problem but it has stopped happening since I started killing the indvidual processes that I didn't want to be running in the background instead of all processes. Do you kill all processes regular as well? Might be worth it to stop in that case.