How clean is the inside of your computer? Over time, dust can build up on the fans and other components, causing them to overheat and fail. Excessive heat is one of the things that can shorten the lifespan of your computer. Simply blowing out the dust occasionally can prevent this from happening.
To clean the inside of your desktop case, follow these simple steps.
1. Remove the side cover of your system. The process for doing this varies by system, consult your system’s owners manual if necessary.
2. Use a blower tool to blow away all of the dust from the all areas of the inside of the case. Be sure to hold the fans still while doing this so that they don’t spin too fast because this could damage the bearings and cause them to rattle.
3. Once all of the dust is removed, re-install the side cover of your system.
The blower tool that I use is the Xpower Airrow. This blower is very powerful and has many other uses besides just cleaning your computer case.
I have noticed this problem recently on quite a few of the Dell Optiplex 3050 models that I manage, and it seems to be caused by the latest Windows 10 creators update (version 1803, Spring 2018). The problem actually seems to occur just BEFORE the update is actually installed, presumably due to a network driver update that is installed before the major update.
The symptoms are that your network port shows a link and is connected, but you will have the yellow error indicator on your network icon in the system tray. You will not receive an IP address (if you are using DHCP), and if you are using a static IP address, you will still see that you have the correct IP address, but you just won’t be able to connect to anything.
Luckily the solution to this problem is very simple. Go into device manager Device Manager, and expand the “Network Adapters” section. Right-click on the “Realtek PCIe GBE Family Controller” and select “Uninstall”.
In the windows that pops up, also select “Delete the driver software for this device.” and press OK.
Now, restart your computer and it will automatically re-install the network drivers, and your network connection should be working normally again. However, if you had a static IP address configured before, you will need to go back in and reconfigure that information after doing this.