Buzz
Step 2: Select Device Manager (1) => right-click on Communications Port (COM1) (2) => choose Properties (3).
Step 3: Navigate to Port Settings (1). Then, set Bits per second to 128000 (2) and Flow control to Hardware. Afterwards, press OK to complete the process.
Show Communications Port (for devices without this option displayed)
For devices not displaying Communications Port, follow the instructions below.
Step 1: Go to Action (1) => Add legacy hardware (2).
Step 2: Press Next to proceed.
Step 3: Choose the first line (1) => Next (2).
Next, the system will scan for the Communications Port for you. If the scan is unsuccessful, press Next.
Step 4: Choose the Ports (1) option => Next (2).
Step 5: Select (Standard port types) (1) and Communications Port (2) => Next (3).
Step 6: Press Next to proceed.
Next, click Finish to complete the process.
2. Configure Power Management for Wifi Adapter
Step 1: Press the Windows + R key combination to open the Run dialog. Next, enter the command ncpa.cpl (1) => OK (2).
Step 2: Right-click on the Wifi adapter (1) => Properties (2).
Step 3: Click on Configure...
Step 4: Navigate to the Power Management (1) tab => Uncheck the option Allow the computer to turn off this device to save power (2) => OK (3).
3. Configure Wifi Performance in Power Management
Step 1: Press the Windows + R key combination to open the Run dialog. Next, enter the keyword powercfg.cpl (1) => OK (2).
Step 2: Click on Change plan settings.
Step 3: Select the option Change advanced power settings.
Step 4: Navigate to Wireless Adapter Settings (1) => Choose Settings as Maximum Performance (2) => Click Apply (3) => Press OK (4).
4. Modify the IP address to a static IP
Changing the IP address is also a method to troubleshoot unstable Wi-Fi. To alter the IP address for the network card, simply access the Wi-Fi Adapter and make adjustments in the IPv4 section. Readers can refer to the tutorial on changing the IP address here:
- How to change the IP address for your computer: https://Mytour/cach-doi-dia-chi-ip-tren-may-tinh/
- Guide to set a static IP address and change DNS: https://Mytour/huong-dan-dat-dia-chi-ip-tinh-thay-doi-dns/
5. Reboot your Wifi modem and utilize a signal extender
For home Wifi networks, try turning off the Wifi modem and turning it back on after about 5 minutes. Sometimes, your Wifi modem may degrade over time, especially in the hot and humid conditions of Vietnam, affecting the signal transmission. Additionally, you can use compact signal boosters (Extenders) without the hassle of tangled wires. Just plug them in, set them up on your phone using the assigned IP address, and spend around 200,000 - 300,000 VND to get a sleek Wifi signal extender with a power plug for your wall corner. You can explore popular models like TOTO Link EX200 or Tenda A9 on the market.
6. Utilize USB Wifi with extended antennas or upgrade the antennas for the Wifi modem
After ruling out software-related issues, Wifi glitches on laptops are mainly caused by obstructed signals or poor Wifi antenna range. On laptops, enhance Wifi signal reception by using USB Wifi with antennas (such as the TP Link WN722N USB Wifi model with a detachable external antenna). If you opt for a USB Wifi without a detachable antenna, you can use a USB extension cord to extend the signal range or locate the strongest signal point to place the USB.
Typically, default antennas on Wifi modems and USB Wifi devices provided by manufacturers have low gain (ranging from 3-5dBi), resulting in limited signal reception and transmission range. You can upgrade some Wifi modems or USB Wifi devices with support for detachable antennas by replacing them with longer antennas with higher gain (8 dBi or more) to boost Wifi signal range. Apart from purchasing new antennas, you can explore materials like electrical tape, copper wire, and soldering to DIY a Wifi antenna based on available resources.
7. Contact your Internet service provider
If you've tried every method and still can't use Wifi reliably, seek assistance from your Internet service provider. You can find the hotline number for network providers on your service bill or contract. After making the call and providing necessary information, technicians will visit your home to check the connection, Wifi modem, and offer free repair or replacement if the issue arises from external factors like wiring errors or faulty modems.
The troubleshooting methods for fixing erratic laptop Wifi issues in the above article will help you understand the problem and handle situations more effectively. Best of luck to all of you!
