Shutting down and restarting

Reset it. Just do it.

Once the tablet has shut down, press and hold the Volume Up and Power buttons simultaneously until the Samsung logo appears. The Samsung Galaxy Tab will boot into ASR (Android System Recovery) mode. 3. Use the Volume rocker to highlight the 'wipe cache partition' option and the Power button to select it.15 Sep 2015

How to Fix the Samsung Galaxy Tab Reboot Loop - Appuals.com

https://www.google.co.uk/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=Samsung+galaxy+2+tablet+keeps+restarting


see if this helps you out.

Cry. Seriously, remove the drive and copy off of it any and all files that you want and need. Then format the unit and reinstall the operating system and programs from the backup disks that you have. No backup?

Now you are really ******* - see if you can get set from notebook manufacturer. If not check with your computer literate friends to see if any of them have OS installation disks.

Replace the oil filter as it is clogged very cheap fix. I hope this helps.

Overheating When the CPU overheats then it will shut down (i.e. thermal overload) and won't boot up again until it has cooled down. If this is the problem is not fixed then the CPU will eventually fail.
A faulty fan causes the problem or the fan and heat sink assembly are clogged with dust.
Check the CPU fan to see if it spins freely, if not replace the fan.
If the fan and heat sink is clogged with dust the remove the dust and make sure the vents are clear and dust free. Use a small brush and can of compressed air to do this.

Try initialize network 08-693

cheak that there is no scheduled shut down

i think messengr's registry values are corrupted..
uninstall ur msngr..
clean ur regisrty by tuneup utilites..like s/w
and then install again

Its defective. While your talking it thinks there is no conversation & enters sleep mode.