Win7 system performance information and tools can not be used how to solve

                                                                                                                                                                                         

In the process of using Win7 system, if computer
is slow, we can view and understand the running status of the system through the performance information of Win7 system and advanced tools in the tool. However, there are Win7 system users who report that the performance information and tools are not available in the Win7 operating system, and also prompts "can not calculate the Windows experience index of your system. ” What is the problem? This kind of problem may be caused by the driver not installed, or the system settings, here to introduce the specific solution!
Check if the driver is installed:

Open “Computer
”right click, select “property", click “Device Manager” to see if the driver is Normal, if there is a "question mark", "exclamation mark", it means that the driver is not installed, we can first install the driver from the relative brand's official website, see the downlink is not good, if not, please see the following solutions.
Workaround:
1. Right click on the computer and select “Attributes”, click ““Advanced System Settings”;

2. Click ““Advanced” in the system property interface. Select the card, and then click "Environment Variables";

3. In the System Variables window, click on the "System Variables (S)" and find the variables "TEMP" and "TMP"). If the values ​​of both variables are "%SystemRoot%\\TEMP", if they are not modified to "%SystemRoot%\\TEMP", if these two variables are not found, the system variables (S) will be "" Click Next to create these two variables, set the value to “%SystemRoot%\\TEMP”, then click OK and click OK.

After the above method, you can solve the problem that Win7 system performance information and tools can not be used, but after setting, we can easily check the performance of computer hardware and software.