T510 Suddenly Restarting/Rebooting while on battery power.

My 1 year old T510 suffers from sudden restarts. 
When the notebook is booting up and Windows is loading, the screen will suddenly go black and then restart itself a couple of seconds later.  This happens at different times during the process, sometimes while the screen is still black with the animated windows logo and sometimes when it is on the desktop and the system is 99% finished loading.
When connected to the AC power, the issue does not occur.
The one and only way I can stop it from occurring while using battery power is by running windows in safe mode.
Because of this I was hoping it would be a windows/driver related issue however...
I have two hard drives with a different operating system on both. One has Windows 7 and the other Linux Mint.  They both suffer the same restarting issue on power up (using the battery as power source). They can both run without a problem using AC wall power.
When the problem occurs don’t get a blue screen and have unchecked the 'Automatic restart' option in case I was missing it.
I am at a loss as to what could be causing it.
Thank you to anyone who can give me some advice on this.

JDay wrote:
CorkyG wrote:
When I have my T510 at home in desktop mode, I remove the battery completely and store it in a cool, dry place.
That does nothing for your battery. Removing the battery when not in use (for long periods of time) only helped increase the life of the older NiMH and NiCAD batterys that are no longer used in laptops. That was due to those batteries having cell memory. LiION batteries do not have cell memory, they have charge/discharge cycles.
Humid air promotes discharge into the air, and higher temperatures increase reaction speed. So, all in all, there should be an effect, but how effective it is is dependent on how long you plan to store your battery. Overnight shouldn't be anything significant, but since it's usually fairly easy to find a cool and dry place, you might as well.
W520: i7-2720QM, Q2000M at 1080/688/1376, 21GB RAM, 500GB + 750GB HDD, FHD screen
X61T: L7500, 3GB RAM, 500GB HDD, XGA screen, Ultrabase
Y3P: 5Y70, 8GB RAM, 256GB SSD, QHD+ screen

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    Message was edited by: Pangemw

    Welcome to the Forums!
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