CxUIUSvc Service taking up tons of CPU

Hi Michael

My name is Andre Da Costa; an Independent Consultant, Windows Insider MVP and Windows & Devices for IT MVP. I'm here to help you with your problem.

That service is related to Synaptics HD audio. You can try uninstall or disable it.

If that does not work, here are some other things you can try...

Press Windows key + X

Click Device Manager

Expand Batteries

Right-click Microsoft ACPI-Compliant System.

Choose Update Driver Software.

Make sure you are connected to the Internet, the check for updates.

Check if its working...

Other things you can try....

1. Run Windows 10 Battery Diagnostics

If your battery isn't fully charging, the first thing you can try is the Battery troubleshooter in Windows 10.

Open Start > Settings > Update & security > Troubleshoot

Scroll down then click Power

Click Run the troubleshooter

Complete the wizard then restart your device to see if the problem is resolved.

Most laptop computers include their own factory diagnostics utilities, too. It is recommended you also use those to test your battery. Accessing the diagnostics will vary by manufacturer, so, consult the documentation that came with your computer. Before you run a test, you might need to first fully charge the device to 99 or 100 percent, disconnect the AC adapter, boot into the diagnostic utility then run the test.

2. Check if Your AC Power Supply is Properly Connected

Sometimes the power cable connected to your AC power supply brick might be loose. Check to make sure it is fitted and secured properly.

3. Try a Different Wall Outlet and Check for Low Voltage and Electrical Issues

The other day, my house had some serious electrical issues going on. You would be amazed how much voltage issues can affect the performance of your system. Plugging in my laptop into an outlet within my room dimmed the light, while an outlet in the living room caused it to wink.

Another room it remained constant but charging was horribly slow. This, of course, meant I had low voltage issues and with so many appliances competing for the little bit of faulty energy, it made it even worse. Ultimately, I ended hiring an electrician to sort out the issues. After fixing it up, my laptop started charging normally.

4. Test with Another Charger

I mentioned the AC power adapter earlier. It's possible your charger might be the culprit. If you have a working spare laying around the home, give it a try to see if it charges. You can also borrow one from your work colleague if you don’t have any. If you don't have access to another charger, try yours on another laptop to see if it charges the device.

If you are mixing and matching laptop power adapters, make sure you choose the correct power supply (https://www.amazon.com/s/ref=nb_sb_noss_2?url=s...). Read the brick and make sure it has the same polarity and voltage as the adapter for your laptop.

5. Remove All External Devices

If you keep external devices such as a smartphone, a USB external drive, mouse, printer and anything else attached to your system while charging, it will take longer for your battery to reach 100%. Make sure you disconnect all of those devices so your system won’t be competing with all the other electronics.

6. Check Your Connectors for Dirt or Damage

If your laptop has a modular battery, remove it then check for any damage or to see if it needs cleaning around the contacts and inside the battery compartment. Also, check if there are any dust particles inside the charging port that might be preventing the battery from charging.

7. Check for BIOS and Chipset Driver Updates

Sometimes your system might be overdue for an update for components such as your BIOS and Chipset. Updates can help resolve bugs that might be preventing the battery from charging efficiently.

8. Press and Release Power Button Reset

Sometimes unknown glitches can prevent the battery from charging. An easy way to fix it is to power down your computer, hold down the power button for 15 to 30 seconds, plug in the AC adapter, then start the computer.

9. Disable Apps and Check Battery Usage in Windows 10

Going back to Windows 10 a bit, recently, I noticed my Surface Pro was taking an unusually long time to charge and the fans started to rev up. Little did I notice the culprit was right there on my Taskbar all along. Slack's Windows client was waiting in an attempt to connect to the Internet. So, checking your apps to determine whats running in the background can help you not only conserve battery life but limit what prevents it from charging faster.

There are a couple ways to do that. Open Start > Settings > Privacy > Background apps. Scroll down then toggle off the apps that might be preventing your device from reaching a full charge.

Still in Settings, open System > Battery > Battery usage by app. This will tell you which apps are using the most battery and you can make a decision what to do, whether to let Windows decide if it should run in the background while not sacrificing battery life.

10. Replace Charger or Battery Module

Ultimately, if you don't see any improvements after trying all the above, then it’s maybe best that you replace either the charger or battery itself. This will require contacting your laptop manufacturer and placing an order. Batteries and the chargers are not necessarily cheap, especially if its an older system. But, if you have no choice, its something you will just have to do to get your system back in working order.

Source....

https://www.groovypost.com/howto/troubleshoot-b...

Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

Hi Michael. I'm Greg, an installation specialist and 9 year Windows MVP here to help you.

Update the Sound driver from the PC maker's Support Downloads webpage for your exact model. While there check that you also have the latest chipset, BIOS, display, network, bluetooth, USB and all other drivers, compared to the ones presently installed in Device Manager reached by right clicking the Start button.

See fixes here for that driver's services acting up:

https://h30434.www3.hp.com/t5/Desktop-Audio/220.... It would be the same for other than HP devices, too, so worth trying.

If not let's check over your install most thoroughly: Go over this checklist to make sure the install is set up correctly, optimized for best performance, and any needed repairs get done: http://answers.microsoft.com/en-us/windows/wiki...

Start with Step 4 to turn off Startup freeloaders which can conflict and cause issues, then Step 7 to check for infection the most thorough way, then step 10 to check for damaged System Files, and also Step 16 to test a new Local Admin account. Then continue with the other steps to go over your install most thoroughly.

If nothing else helps you can run a Repair Install by installing the Media Creation Tool and choosing from it to Upgrade Now. This reinstalls Windows in about an hour while saving your files, apps and most settings, solves many problems while also bringing it up to the latest version 1809 which you need anyway and by the most stable method. http://windows.microsoft.com/en-us/windows-10/m...

But remember that in Windows 10 everything depends upon the quality of the install, and Factory or Upgrade installs are inferior installs which most enthusiasts won't even run because they'd expect endless issues. Consider now or later doing the Clean Install in this link which compiles the best possible install that will stay that way as long as you stick with the tools and methods given: http://answers.microsoft.com/en-us/windows/wiki...

There is also an automated Fresh Start that reinstalls WIndows while shedding corrupting factory bloatware, saves your files, but doesn't clear the drive to get it cleanest: https://www.howtogeek.com/265054/how-to-easily-...

I hope this helps. Feel free to ask back any questions and let us know how it goes. If you'll wait to rate whether my post helped you, I will keep working with you until it's resolved.

________________________________________________________

Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before you decide to download and install it.