More recently introduced terms such as 'annually laminated' are synonymous with varve. Of the many rhythmites in the geological record, varves are one of the most important and illuminating in studies of past climate change. Varves are amongst the smallest-scale events recognised in stratigraphy.
PCs are designed to shut down automatically when heat endangers the hardware. To find out if this is your problem, download and install Speedfan. It's small and free. Although Speedfan's basic job is controlling the speed of your PC's fans (you probably guessed that by the name), it also provides the CPU temperature.
Remote Shut Down. To shut down the computer, launch a Command Prompt window on another computer (click Start, type Command Prompt, and press Enter). From the remote shutdown dialog window, you can add one or more computer names and specify whether you want to shut down or restart the system.