Question: what might be the reason why the maximum frequency goes down to 49%, while this is not sufficient to run existing processes? (please note if I am wrong in interpreting that CPU usage is calculated as % of the maximum frequency - correct? So the computer is effectively running at 50% of maximum capacity?)
See as well the other graphs per below - my complete freezes of the computer start with the first graph (100 CPU, max freq 49)
After I go to battery and remove the power plug, the CPU usage drops (second graph - to 45 with maximum freq still at 49) and performance comes back.
Computer coming partially to live when moving to battery
Then finally after a few minutes the maximum frequency goes up to e.g. 80 again (at the moment that i probably no longer need it). Core temperatures stay stable, no hard disk failure found. Any tips welcome (should I manually set the minimum maximum frequency to e.g. 80%)?
Computer fully recovering
System characteristics per below
• OS Name Microsoft Windows 7 Professional • Version 6.1.7600 Build 7600 • System Manufacturer Dell Inc. • System Model Latitude E6410 • System Type x64-based PC • Processor Intel(R) Core(TM) i5 CPU M 520 @ 2.40GHz, 2400 Mhz, 2 Core(s), 4 Logical Processor(s) • BIOS Version/Date Dell Inc. A09, 26/05/2011 • SMBIOS Version 2.6 • Installed Physical Memory (RAM) 8.00 GB • Total Physical Memory 7.80 GB • Available Physical Memory 3.40 GB • Total Virtual Memory 15.6 GB • Available Virtual Memory 9.69 GB • Page File Space 7.80 GB