Kekunci peralihan kiri tidak berfungsi tetapi yang betul adalah

The left Shift key issue is likely physical, not software-related, since the right Shift works. 2. Check for debris or damage by turning off the device, shaking out particles, and using compressed air. 3. Test the keyboard on another device or OS to confirm it’s a hardware problem if the left Shift still fails. 4. Use the on-screen keyboard to verify the input registration issue. 5. Clean or repair the key mechanism by carefully removing the keycap, inspecting the scissor mechanism, and reattaching or replacing it. 6. Remap another key, like Caps Lock, to act as Left Shift using tools such as Microsoft PowerToys or Karabiner-Elements. 7. Consider replacing the switch or entire keyboard for desktops, or seek technician repair for laptops if cleaning and remapping fail. The problem is fixable through cleaning, remapping, or professional repair.

If your left Shift key isn’t working but the right one is, it’s likely not a software or driver issue—since the right Shift key functions normally—so the problem is probably isolated to the left key itself. Here’s how to troubleshoot and fix it:

1. Check for Physical Obstruction or Damage

Dirt, dust, or debris under the keycap can prevent it from registering presses. This is especially common on laptops or keyboards used in messy environments.

• Turn off your device.
• Tilt the keyboard slightly and gently shake it to dislodge loose particles.
• Use compressed air to blow under the left Shift key.
• Inspect if the key feels sticky or doesn’t spring back properly.

If the key feels physically different (mushy, loose, or stuck), the mechanism may be damaged.

2. Test the Keyboard on Another Device or OS

To rule out software issues:

• Plug your keyboard into another computer (if it’s external).
• Boot into a different OS (like a Linux live USB or recovery mode) and test the key.

If the left Shift still doesn’t work across devices or systems, it’s a hardware issue.

3. Use On-Screen Keyboard to Confirm

Open the on-screen keyboard to verify the issue:

• Windows: Press Win + Ctrl + O to open the on-screen keyboard.
• Mac: Enable it in System Settings > Accessibility > Keyboard.
• Press the left Shift key virtually and test functionality.

This helps confirm whether the problem is with input registration or the physical key.

4. Clean or Repair the Key Mechanism

If it’s a mechanical or laptop keyboard:

• For laptops: Carefully pry off the Shift keycap (use a plastic tool). On most laptops, the left Shift uses a scissor mechanism with a plastic retainer. Check if the retainer is cracked or misaligned.
• Reattach or replace the mechanism if possible.
• Clean under the key with isopropyl alcohol and a cotton swab.

Note: Reattaching laptop keys can be tricky—search for a model-specific guide before removing keys.

5. Use Keyboard Remapping as a Workaround

If the key is physically broken and can’t be fixed easily:

• Remap another key (like Caps Lock) to act as Left Shift.
• Tools:
  • Windows: Use Microsoft PowerToys' Keyboard Manager.
  • Mac: Use Karabiner-Elements.
  • Linux: xmodmap or GUI tools like GNOME Tweaks.

For example in PowerToys:

• Open Keyboard Manager
• Click "Remap a key"
• Set Caps Lock → Left Shift

6. Consider Replacement

If it’s a desktop keyboard:

• Replace the switch (if mechanical and hot-swappable).
• Or replace the whole keyboard if not worth repairing.

If it’s a laptop:

• Minor key issues are often repairable by a technician.
• Severe damage may require a keyboard panel replacement.

Basically, since the right Shift works, the system recognizes Shift input—so focus on the physical left key. Try cleaning or reseating the keycap first. If that fails, remap another key or get it repaired. Not a big crisis, but annoying—fixable one way or another.

Atas ialah kandungan terperinci Kekunci peralihan kiri tidak berfungsi tetapi yang betul adalah. Untuk maklumat lanjut, sila ikut artikel berkaitan lain di laman web China PHP!