1. Possible causes: (1) Blocked vents. (2) Dust buildup on the fan. (3) Improper operating environment (e.g., using in bed). (4) Fan malfunction.

2. Solutions: (1) Ensure bottom and side vents are unobstructed. (2) Use a cooling bracket. (3) Clean the fan regularly (profession cleaning recommended once a year). (4) Avoid running demanding software/games under heavy load for extended periods. (5) Check if the fan at the bottom vent is making a spinning sound; if not, a fan malfunction is causing the computer to overheat.

3. If the fan malfunctions, please contact the after-sales team at umi.service@outlook.com for further after-sales support.

1. Possible causes: (1) Power mode is set to power saving. (2) Graphics card driver is outdated.

2. Solutions: (2) Adjust power mode to "high performance". (3) Update graphics card driver to game-optimized version. (4) Lower game graphics settings and turn off V-Sync.

1. Possible causes: (1) Power adapter not connected or damaged. (2) Battery completely depleted. (3) Power button malfunction.

2. Solutions: (1) Check if the power cord is plugged in securely; try a different socket. (2) Remove external devices (USB flash drive, external monitor, etc.) and restart. (3) Press and hold the power button for 15 seconds to force shutdown, wait 1 minute, and then restart. (4) If using batteries, connect the power adapter and charge for 30 minutes before trying again.

3. If the above solutions still fail to power on, please contact the after-sales team via email at umi.service@outlook.com for further after-sales support.

1. Possible causes: (1) Too many background programs. (2) Insufficient hard disk space (especially C drive). (3) System has not been updated for a long time.

2. Solutions: (1) Open Task Manager (Ctrl+Shift+Esc) and end unnecessary processes. (2) Clean up disk space and uninstall infrequently used software. (3) Restart the computer regularly and update the system and drivers.

1. Possible causes: (1) The fan makes a "whooshing" sound when running under high load. (2) There are foreign objects inside the fan or the fan blades are damaged, making a "clicking," scraping, vibrating, or harsh sound (occurring at any time, especially when the computer is turned on). (3) Dust accumulation in the fan.

2. Solutions: (1) Avoid running large software/games under high load for extended periods. (2) Clean the fan regularly (professional dust cleaning is recommended once a year).

3. If there are foreign objects or damaged fan blades, please contact the after-sales team at umi.service@outlook.com for further after-sales policy information.

1. Possible causes: (1) Power adapter malfunction. (2) Incorrect charging port connection. (3) Loose charging interface. (4) Battery malfunction.

Solutions: (1) Try replacing with a power adapter of the same model. (2) Check the charging interface for foreign objects or damage. (3) Connect the adapter according to the charging interface markings.

3. If the above problems occur, please contact the after-sales team via email at umi.service@outlook.com for further after-sales policy information.

1. Possible causes: (1) Outdated driver. (2) Router problem. (3) Incorrect system network settings.

2. Solutions: (1) Try toggling airplane mode once. (2) Update the wireless network card driver. (3) Reset network settings: Settings > Network & Internet > Network Reset. (4) Try connecting to other Wi-Fi networks to determine if it's a computer problem.

3. If the above solutions still don't solve the problem, please contact the after-sales team at umi.service@outlook.com for further after-sales support.

1. Possible causes: (1) Accidental press of the shortcut key to turn off (usually Fn+F1-F12). (2) Driver problem. (3) Settings changed.

2. Solutions: (1) Check if the touchpad switch was accidentally pressed (the icon is usually the touchpad pattern). (2) Update the touchpad driver. (3) Check settings: Control Panel > Mouse > Device Settings. (4) Restart the computer.

3. If the above solutions still do not solve the problem, please contact the after-sales team via email at umi.service@outlook.com for further after-sales support.

1. Possible causes: (1) Backlight function is turned off. (2) Driver problem. (3) Keyboard hardware failure.

2. Solutions: (1) Try the backlight shortcut key (usually Fn + Space or F1-F12 with a backlight icon). (2) Check the backlight settings in the power management software. (3) Update the keyboard driver. (4) Restart the computer.

3. If the above solutions still do not solve the problem, please contact the after-sales team via the after-sales email umi.service@outlook.com for further after-sales policy information.

1. Possible causes: (1) Bluetooth service not started. (2) Incorrect device pairing information. (3) Signal interference.

2. Solutions: (1) Check if the Bluetooth switch is on (physical switch or Fn shortcut key). (2) Delete old pairing records and re-pair the device. (3) Update the Bluetooth driver. (4) Keep away from wireless routers, microwave ovens, and other devices that may interfere with the connection.

3. If the above solutions still do not resolve the issue, please contact the after-sales team at umi.service@outlook.com for further after-sales support.

1. Possible causes: (1) Graphics card driver problem. (2) Loose screen cable. (3) Hardware failure.

2. Solutions: (1) Connect an external monitor to determine if the problem is with the screen. (2) Update or reinstall the graphics card driver. (3) Adjust the screen refresh rate (right-click on the desktop > display settings > advanced display settings). (4) If the external monitor is working properly, the problem may be with the screen or the cable.

3. If the above problems occur, please contact the after-sales team via email at umi.service@outlook.com for further after-sales support.

1. Possible causes: (1) Software conflict. (2) Memory failure. (3) Corrupted system files.

2. Solutions: (1) Record the blue screen error code (e.g., 0x0000001A). (2) Enter safe mode to check for software conflicts. (3) Run a memory diagnostic tool (Windows Memory Diagnostics). (4) Use a system restore point to restore.

3. If the above problems occur, please contact the after-sales team via the after-sales email umi.service@outlook.com for further after-sales policy information.

1. Possible causes: (1) Incorrect boot order. (2) Hard drive failure. (3) Corrupted system files.

2. Solutions: (1) Enter BIOS to check the boot order and ensure the hard drive is the first boot device. (3) Unplug external USB devices and restart. (4) Run a hard drive testing tool (such as the diagnostic tool provided by the brand). (5) Try system recovery or reinstallation.

3. If the problem persists, please contact the after-sales team via email at umi.service@outlook.com for further after-sales support.

1. Possible causes: (1) Dirty touchpad surface. (2) Outdated driver. (3) Accidental touch by hand.

2. Solutions: (1) Clean the touchpad surface. (2) Adjust the touchpad sensitivity settings. (3) Update the touchpad driver. (4) Connect an external mouse to test if it is a touchpad hardware problem.

3. If the problem persists, please contact the after-sales team at umi.service@outlook.com for further after-sales support.

1. Possible causes: (1) Dirty fingerprint sensor. (2) Poor fingerprint quality. (3) Driver issue.

2. Solutions: (1) Clean the fingerprint sensor. (2) Delete the old fingerprint and re-enroll from multiple angles. (3) Update the fingerprint recognition driver. (4) Increase the recognition requirements in Windows Hello settings.

3. If the problem persists, please contact the after-sales team at umi.service@outlook.com for further after-sales support.

1. Possible causes: (1) Mute settings. (2) Audio driver problem. (3) Speaker hardware failure.

2. Solutions: (1) Check the volume mixer to ensure all programs are not muted. (2) Update the sound card driver. (3) Try connecting headphones to determine if the problem is with the speakers. (4) Run an audio troubleshooting tool.

3. If the problem persists, please contact the after-sales team at umi.service@outlook.com for further after-sales support.

1. Possible causes: (1) Privacy settings prohibit microphone access. (2) Microphone hardware malfunction. (3) Sound card driver issue.

2. Solutions: (1) Check microphone permissions: Settings > Privacy > Microphone. (2) Test with different applications (e.g., recorder, conferencing software). (3) Update sound card driver and check microphone device status in Device Manager. (4) Test with an external USB microphone to see if it's a hardware problem.

3. If the problem persists, please contact the after-sales team at umi.service@outlook.com for further after-sales support.

1. Possible causes: (1) Damaged network cable. (2) Network card driver problem. (3) Incorrect network settings.

2. Solutions: (1) Replace the network cable and test. (2) Check the network adapter status in Device Manager. (3) Update the network card driver. (4) Run the network troubleshooter.

3. If the problem persists, please contact the after-sales team via email at umi.service@outlook.com for further after-sales support.

1. Possible causes: (1) Loose or damaged connection cable. (2) Incorrect display mode settings. (3) Incompatible graphics card driver.

2. Solutions: (1) Check if the interface is plugged in securely, and try replacing the connection cable. (2) Use the shortcut key to switch display modes (usually Win+P). (3) Update the graphics card driver. (4) Adjust the resolution and refresh rate in the display settings.

3. If the problem persists, please contact the after-sales team via email at umi.service@outlook.com for further after-sales support.

Taking 1TB of RAM as an example, the issue of only 475GB of hard drive storage space might be due to an unpartitioned disk. You can manually partition the disk using the following steps:

1. Open the "Disk Management" tool: Press the "Win+R" keys on your keyboard, type "diskmgmt.msc", and press Enter to open the "Disk Management" tool.

2. Create a new simple volume: Right-click the compressed unallocated space, select "Create New Simple Volume", and follow the prompts to set the volume size, drive letter, file system, and other information. Finally, click "Finish".

1. When measuring your laptop screen size, use a tape measure or ruler to measure the distance from one corner of the screen to the diagonal. Make sure you are measuring the actual area of ​​the screen, not the surrounding bezel or frame. The number of inches you get is the screen size.

1. All our keyboards are US keyboards (QWERTY), but we provide stickers or silicone films in the corresponding languages ​​for each country. You can directly cover the keyboard with these stickers and use them. After receiving the product, you can simply set the language version and use it normally.

1. All our computers come pre-installed with Windows 11 Pro. After a simple setup upon receipt, you can use them normally.

1. Our computers come pre-installed with WPS Office. WPS is fully compatible with Microsoft Office file formats, allowing for seamless opening and editing of Office files without formatting issues. It also supports various document formats such as PDF, TXT, and RTF, and its functionality is essentially the same as Office!