Recent content by hw_user

  1. H

    Question How to check/test new laptop battery ?

    I peeled off some black labels on the back of the battery and discovered it was a Dell battery. The eBay seller is probably refurbishing used Dell batteries and selling them as new replacements. If it is a Dell battery why is it not recognized? Since it was not detected, any BIOS or software...
  2. H

    Question How to check/test new laptop battery ?

    I ordered the battery from eBay. It is not a Dell battery. I found out later from reading some Google search results saying that Dell may not detect non-Dell batteries. But it is too late. The tiny battery LED at the top comes on briefly and turns off when I plug in the power adapter. I am not...
  3. H

    Question How to check/test new laptop battery ?

    I threw away the battery of my Dell E7440 Laptop because it bulged 3 weeks ago. I have been running the laptop without a battery. I finally got a new 34GKR battery today. I plugged the battery in but the laptop cannot detect it. The command prompt says "no battery is detected" and the BIOS...
  4. H

    Discussion The risk of buying an old refurbished Chromebook

    I am very bad at keeping my stuff safe while traveling. I traveled 2 to 3 times every year. I lost my bag with my laptop in it 3 times in the last 5 years. I do not want to bring my regular laptop with me anymore in my next travel. I am thinking of getting a cheap refurbished Chromebook. I...
  5. H

    Question How to get USB key to be recognized again

    Other USB key works fine on my WIN 11 laptop. I plug the USB key into another WIN 11 laptop. The same problem. I can use the USB key on both my phone and my wife's phone (all Android). No , there was nothing asked to be done on the USB key. I just plugged the key in and used VLC to play the video.
  6. H

    Question How to get USB key to be recognized again

    I wanted to copy a video file from my Android phone to a USB key (128G NTFS). I connected my phone to my WIN 11 laptop and used Windows File Explorer to copy the video file from my phone to a USB key (128G NTFS). The copy was successful. The video on the USB key played successfully on an...
  7. H

    Question Data used by Chromecast versus Mira cast

    I am comparing using an ISP (Rogers or Bell) versus wireless data for home internet. I do not download torrents. I stream a couple of hours of videos (YouTube or videos on websites) every day. Web search results say bandwidth usage depends on the quality of the video and also the size of the...
  8. H

    Discussion Which is a better option, an access point or two routers

    I have 6 wired users and 10 wireless users. Two of the wireless users are 2.4G only. I am using a CGN3 modem+router from my ISP. I am getting a very weak WIFI signal at the far end of my house and I need more wired ethernet ports. All the users just need fast internet access and fast data...
  9. H

    Question Can I test DC to DC converter without load ?

    I used 12V from an ATX power supply as input and the no-load output gave me a stable 4.5V. Perhaps the DC output is not the same between an ATX PS and my laptop adaptor. The bulk converter has two adjustment ports (CV, constant Voltage, and CC, constant current). With the ATX power supply as...
  10. H

    Question Can I test DC to DC converter without load ?

    I just got a DC-to-DC bulk converter step-down module. I want to use it to step down my surplus 16.5 Volt laptop power supply to 12V. I connected the 16.5V laptop power supply to the input of the module and a voltmeter to the output. But I saw the voltage on the meter going between 10v and 3v...
  11. H

    Question Dell laptop sleeps randomly and refuses to wake up

    Thanks, it was the battery.
  12. H

    Question Which type of HDMI extender do I need ?

    I need to send HDMI signal from an Android box to a TV in the next room. The distance is about 45 to 50 feet. I will be happy with 1080p. There is already a CAT5e cable between the rooms. I searched Google and found 3 types of HDMI extenders over ethernet (RJ45): 1. Passive (no power) using a...
  13. H

    Question Dell laptop sleeps randomly and refuses to wake up

    My 10-year-old Dell Inspiron running WIN 10 home went to sleep for no reason. I was in the middle of my work, and all of a sudden the screen turned black with no response to the keyboard or mouse. The power light is still on. I have to hold the power button down for a few seconds to completely...
  14. H

    Question Is my USB flash drive dead?

    Thanks for the quick response. But my problem is it is not showing up (even diskpart cannot see it). I cannot do any format without the OS seeing the drive first. But I may be wrong.
  15. H

    Question Is my USB flash drive dead?

    I have a 32G Kingston USB key. I only have it for a month. It's been working fine. This week I used it for building bootable systems. It has been formatted and reconfigured a few times RUFUS and Diskpart. The last time, I plugged it into my WIN 10 laptop, WIN 10 cannot detect it anymore. It is...