Is there reboot or restart log to explain why or what?

I get a system restart sometimes. Is there a log anywhere I can find out why the pc says this occurred?

Thank you. The even log was what I was looking for.

I am also having this problem. It's happened 2 or 3 times so far (I got a new machine a couple of months ago) and it always happens when I am away and the machine is idle. At first I thought it was Windows Update but I have that set to not install without my telling it to do so. I looked at the Task Manager and figured out how long the system has been up, so I went to System Events and found the events after the reboot. I've got this message after it restarts:

The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.

The first message after the reboot is at 11:40:32am and the previous message was at 10:17 so there is nothing obvious there (I guess it could show that it was not a clean shutdown since there are likely lost messages). I checked my C: disk for files modified around 11:40 to see if I could figure out what was going on when it rebooted. At 11:38, there is activity in
C:\Users\bill\AppData\Local\Microsoft\Feeds\FeedsStore.feedsdb-ms

Also FeedsStore.feedsdb-ms and Internet Explorer Suggested Sites~.feed-ms in the same directory structure.

C:\Windows\System32\LogFiles\Scm\aefab29b-12d7-4c00-bffa-514e5df093ac

Obviously other files might have been updated right before the reboot but they've been updated since then.

I doubt this has anything that will help solve the problem but hopefully the next person who has it will add their information and maybe we can figure it out.

MisterBill2 said:

I am also having this problem. It's happened 2 or 3 times so far (I got a new machine a couple of months ago) and it always happens when I am away and the machine is idle. At first I thought it was Windows Update but I have that set to not install without my telling it to do so. I looked at the Task Manager and figured out how long the system has been up, so I went to System Events and found the events after the reboot. I've got this message after it restarts:

The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.

The first message after the reboot is at 11:40:32am and the previous message was at 10:17 so there is nothing obvious there (I guess it could show that it was not a clean shutdown since there are likely lost messages). I checked my C: disk for files modified around 11:40 to see if I could figure out what was going on when it rebooted. At 11:38, there is activity in
C:\Users\bill\AppData\Local\Microsoft\Feeds\FeedsStore.feedsdb-ms

Also FeedsStore.feedsdb-ms and Internet Explorer Suggested Sites~.feed-ms in the same directory structure.

C:\Windows\System32\LogFiles\Scm\aefab29b-12d7-4c00-bffa-514e5df093ac

Obviously other files might have been updated right before the reboot but they've been updated since then.

I doubt this has anything that will help solve the problem but hopefully the next person who has it will add their information and maybe we can figure it out.

Hello : You can get who crashed from here Resplendence Software - WhoCrashed, automatic crash dump analyzer

run the program and it will tell you why your computer crashed ..

this has worked great for me ..

Thanks for the suggestion. I installed the program but it did not find any dump files. However, I realized that I just ran the CCLEANER program today because I installed a new version and I am sure it deleted any dump files that existed. If this happens again, I will be ready .