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.
TD. After installing Windows 10, my computer no longer shuts down properly. Windows exits and seems to shut down fine, but my laptop itself does not shut down. I am left with a black screen and my power lights and backlit keyboard still on.If I wait a while then hold the power button for a second, the hardware then shuts down and Windows does not report any errors the next time the computer is started up. am left with a black screen and my power lights and backlit keyboard still on. If I wait a while then hold the power button for a second, the hardware then shuts down and Windows does not report any errors the next time the computer is started up.