Methods/Steps 1:
1. Show your desktop, every computer has a "My Computer" icon
2. Right-click to open My Computer and click on Device Manager. "
2.
3. Or click on the bottom of the "Properties" above the third is "Hardware", and then click on the bottom of the "Device Manager", with the above results are the same.
4. Left-click the top of the small minus sign, then there will be a "scanning to detect hardware changes" icon. The first thing you need to do is to scan your computer for hardware changes.
5. Left-click on the "Scan for Hardware Changes" icon and it will be detected.
6. If all the plus signs under the minus sign are one after the other after the test, then there is no problem and you can use it safely. Like this picture .
7. If the plus signs under the minus sign are not one after another, and there are yellow exclamation marks under one or more of the plus signs, then there is a problem with the hardware or software that needs to be fixed. There will be an extra yellow exclamation mark inside the circle in the screenshot below, because there is no problem with my computer, so I have to make an assumption.
8. If you detect a problem, click on the yellow exclamation point, the system will search for the appropriate software to replace the repair. This will solve some of the computer's problems, and if it doesn't work, take the computer to the repair bar.