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.
While on the sign-in screen, click/tap on the Power button, and click/tap on Shut down. (see screenshot below) OPTION SIX To Shut down Computer using Power Buttons and Lid Note This option is to specify what your computer does when you close the lid and/or press the power buttons 1. Open your Power Options.elect Shut down in the drop down menu, and click/tap on OK or press Enter. (see screenshots below) OPTION FOUR To Shut down Computer from Ctrl+Alt+Del Screen Note If you have fast startup turned on, then this option will perform a hybrid shutdown instead of a full shutdown.