Symptoms. When you view memory information in Windows Task Manager, the values that are displayed for reserved hardware and for speed may differ from what is reported in other sources. For example, Task Manager may show the memory speed to be higher or lower than the speed that is reported in the BIOS.
To fix this, follow these steps: Click Start , type msconfig in the Search programs and files box, and then click msconfig in the Programs list. In the System Configuration window, click Advanced options on the Boot tab. Click to clear the Maximum memory check box, and then click OK. Restart the computer.