I replaced my Hard Drive this summer and reinstalled Windows 7 with the Disk that came with my Laptop. Ever since then my computer will not accept custom changes.
For instance I change the power settings so that the CPU doesn't turn off when the laptop is plugged in or I change the time before the screen turns off but they are not implemented. When I go into the control panel I see that the settings are exactly how I set them but the computer doesn't change what it's doing.
For instance if I change the time before screen turns of when computer is idle to never, the screen still shuts off after 1 minute even though I can see in the control panel that it has been set to never. I am selecting save changes.