There is nothing terrible in your log. Nothing that can cause autoreboots. But I have several suspicions.
I am leaning towards MicroBell's driver solution. It is quite possible that during one of your recent installations, a driver has been corrupted. I cannot explain how that would lead to autoreboots. That is what is puzzling me. So I am going to focus elsewhere first. Could you please list the programs that you installed in the last 10 days. I may have you reinstall several core drivers later, but lets see if a specific program is at fault first.
To check on this, open Windows Explorer, highlight c:, <search>, <all files and folders>, under all or part of the file name, enter *.*, under Type of file, select Folder, click <Search>. Wait until it finishes...could be a bit...then click Sort Results by Category, click Date Modified, now in the right hand window, click on Type at the top of the column. Search down the list to find only the Folders. Look for the most recent folders. This should give you a good idea which programs have been installed recently. Please state only the ones that have been installed since you noticed the problem.