I have Dell optiplex 990 with 4 GB of RAM. I bought more 4 GB to increase the RAM capacity. I bought same DDR3 RAM but...

Hello Vocigo, There could be many reason that your phone screen changes the colors. As you told your phone has fallen down, might possible screen got damage from anywhere. A tiny damage in screen can cause flicker in screen. PCB and display cable can also be damage but probability is low. Most of the time mobile screen got damage. Don't twist your phone otherwise it will permanent stop displaying and may damage other parts of the phone due to short circuit. Keep using like as it or replace your mobile display as soon as possible. You can read below guide that will help you to replace the screen: Xiaomi Redmi Note 7 Screen Replacement

LG washers beep at the end of each cycle to indicate that they are done, and can typically be silenced by pressing the beep button on the front. Other reasons for a washing machine to beep include running out of water or if something has been jammed into it. A front load washer is a machine that washes clothes based on a programmed cycle. The timer on the machine may have been set to time out and cause an alarm. This is a safety feature that has been put in place to ensure that people don’t forget to turn off the washer. If the timer hasn’t been set, it may be due to a power outage or circuit failure. If you don’t want your washer to have a beeping party, it’s crucial to know why your washer keeps beeping. Only then you’ll be able to fix it. To fix your washer you can try the following things (don’t call the service provider just yet): * Check if your machine is getting water * Recheck if the lid is properly closed * Redistribute the load * Make sure your machine is properly balanced on the surface * Check...

Did you port forward in your wifi router? To connect PS4 with wifi you need to open port for PS4 on your wifi router. First check port forwarding in your router.

After installing the parts you have to reset the error codes. You can wait for few miles to detect the issue has been solved and the error code will gone. It is also possible you have some more parts has fault. Please contact any expert technician locally to examine the issue.

Usually brakes are the main reason for the noise. If you are getting noise while breaking means the break pad has dried. Either change the pad or remove dryness from the break pads. In case you are getting continuous noise while running means there is no break pad fault and something else. You should check engine lights error code as well as mobile and coolant. When last you did service your car. I Think you should go for a service.

Seems like battery connection has been broken of your right earbud. It has been fallen so there are chances to break its internal components. You have bring it to service station if it is under warranty.