Fix: Headphone Jack not Working on Android Phone If the issue is with your Computer or a Laptop you should try using Restoro which can scan the repositories and replace corrupt and missing files. This works in most cases, where the issue is originated due to a system corruption. Headphone jack on my Toshiba satellite doesn't work. When I plug my headphones in the computer, speakers play fine. I know it's not the headphone because they work on everything else I've tried. When I go to Control Panel Hardware and Sound Sound, it doesn't show the headphone jack. It only shows the AMD HDMI output and the speakers.

No display/blank screen

Make sure the monitor is plugged in and powered on. If it’s powered on, there should be a light on or near the power button and you should get an error message such as “No Signal”.

Most monitors have a button that lets you choose between the different monitor inputs. Check that the input source on your monitor is set to the same connection as the cable you’re using (HDMI, DVI-D, or Displayport) using the correct button on the monitor.

Confirm the display cable is plugged into the DVI-D, HDMI or Displayport ports on the horizontal graphics card and not the vertical HDMI port. The onboard ports on the motherboard (top left silver bracket) will only work with a CPU with integrated graphics chip. The exact layout of your PC may be different, but generally you will want to plug in the monitor cable to the graphics ports that are below the green, pink and blue audio ports.

Confirm that the monitor cable is plugged into the monitor output port, not the input port if any. Some monitors will be able to send a display to another device, but that same port will not be able to receive a display from the computer.

For any following steps, please make sure that the computer is off and unplugged.

Headphone Slot Not Working Games

Re-seat the graphics processing unit (GPU), and RAM modules:

To re-seat the GPU, first check the back of your case and see if there is either a sliding bracket with 2 screws, or a single hinged bracket with 1 screw. If you see a bracket, you will need to loosen that screw and move the bracket in order to expose the GPU screws. After you have moved the bracket, or if your case does not have a bracket on the back of the case, open the side panel (usually glass) and remove the screw(s) mounting the GPU onto the bracket on the left side with a Phillips-head screwdriver. Press plastic tab on the right side of the motherboard slot that the GPU is inserted to in order to release the card, with your finger or carefully with the screwdriver tip. Once the card is released, slowly rock the GPU back and forth horizontally towards yourself to remove the GPU. Reinsert it, making sure it is firmly secured. You should hear or see the plastic tab lock back into place. Reinsert the screws and close the bracket if necessary.

To re-seat the RAM module, first open the side panel (usually glass) that you can see all of the components. To the right of the CPU cooler, there should be one or more vertical sticks. These sticks are the RAM modules. To remove them, check to see if there are locking tabs on the top or bottom of the slot that the RAM module is inserted in. Press down on the top and bottom slot (if applicable) to release the module. Then, insert the module back in the slot, one side at a time, making sure that the center notches align correctly and that the locking tabs on the top and bottom (if available) snap into place. We find that it is easiest to slide the module in the bottom of the slot first, pressing against with your thumb it until you hear it snap into place, and then press against the top of the module. Whether you have one or two locking tabs, you still should hear 2 clicks when inserting the module into the slot, one for each side.

If you have more than one RAM module, check each one at a time in order to isolate the defective component. You can also re-seat a single RAM module in a different slot to see if the original slot is the culprit.

Ensure that the CPU power cable (black or black/yellow) on the top left of the motherboard is inserted securely by removing it and plugging it back in. To make sure that it is plugged in correctly, there should be a clip on the slot and the plug itself. Confirm that these plugs are lined up.

Take the CMOS battery (silver coin) out, wait a minute for it to drain and then reinsert it into the motherboard. Here is a helpful guide from Intel.

If your monitor uses a port that is not on the graphics card such as VGA or DVI-D, you may need to use an adapter. For VGA specifically, you will need an ACTIVE adapter to convert the digital HDMI, Display Port, or DVI-D signal to an analog VGA signal. An active adapter has an additional cable to receive power, usually from an outlet.

No power

Check to see the power cable is securely plugged into the power supply unit (PSU) in the back of the computer and into a powered outlet or surge protector. Check another outlet or surge protector if possible.

Make sure the rocker switch on the PSU is set to the ‘1’ or line side, not the ‘0’ or circle side.

Reseat the 24-pin motherboard power cable (next to RAM) and the 4/8 pin CPU cables (top left corner).

Locate the PW SW/RES SW headers on the motherboard and reseat them. Short the PW SW pins with a metal screwdriver by touching the two pins in order to attempt to turn the PC on without the power button.

Perform a power cycle by unplugging the power cable, turning the switch to the ‘0’ side and taking out the CMOS battery from the motherboard. After a minute has passed, press the power button repeatedly in order to drain the capacitors. Plug the power cable in, turn the switch to the ‘1’ side, reinstall the CMOS battery and press the power button again to see if it turns on.

Perform the paperclip test on the 24-pin motherboard power cable to test the PSU.

Check the motherboard and GPU and see if there are any burnt or bulging capacitors or signs/smells of burning/smoke.

Power is turning off and on

Reseat the 24-pin motherboard power cable (next to RAM) and the 4/8 pin CPU cables (top left corner).

Reseat the RAM module, making sure that the center notches align correctly and that the locking tabs on the top and bottom (if available) snap into place. You will hear 1 click for each side that is correctly inserted, 2 clicks total

Power cable does not fit power supply

Double check the fit using another monitor or computer power cable if necessary.

Front 3.0 USB ports not working

Open up the case and check that the USB 3.0 cable is plugged into the appropriate header on the motherboard.

If possible, try a different USB 3.0 header in order to check if it is the port that is defective.

No USB ports are working

Perform a power cycle by unplugging the power cable, turning the switch to the ‘0’ side, replug any USB connections and taking out the CMOS battery from the motherboard.

After a minute has passed, press the power button repeatedly in order to drain the capacitors. Plug the power cable in, turn the switch to the ‘1’ or line side, reinstall the CMOS battery and then turn the PC on.

Select boot device/booting into BIOS/UEFI

Check and ensure that the SATA data and SATA power cables are connected to the hard drive disk (HDD)/ solid state disk (SSD).

Follow the data cable from the HDD/SSD(s) to the motherboard and reseat those connections as well.

If you’re still unable to boot into Windows, please contact us via Livechat.

Defaultuser0/Locked Administrator account on login

Defaultuser0 is the hidden account from when you first startup the computer and customize your account preferences. If the first startup is interrupted, it may boot up to a login screen with defaultuser0 as the account name. You will not be able to login using this account as it is not set up for regular use. You can bypass it with the following steps:

From the login screen, hold the shift key and click the restart button to restart the computer.

Click on Troubleshoot, Advanced and then Startup Settings.

At the Startup settings, select “Safe Mode with Networking”. It should fail to boot and restart.

If you still get defaultuser0, go back to the Start settings menu and select “Safe Mode with