Recent content by sabriiskit

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    Question Strange behaviour of usb ports

    I finally found opprtunity to check what's going on hardware. One of the USB2 data pins is defect, it is reading 25 ohms to gnd, means its connection at controller chip is burned, that was why usb2 was not working, but usb3 has no problem because its data lines are completely different and are...
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    Question Computer randomly restarting. Might be the PSU ?

    A few seconds max fan is normal startup behaviour as if hardware reset is pressed. In some cases I faced the situation reset button was mounted critically, partly pressed, pressing the case nearby reset button was resetting the system.
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    Question Strange behaviour of usb ports

    Thanks vov4ik, seems I have to check all data connections, usb2 and usb3 and hope will find something wrong.
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    [SOLVED] Why does my Laptop stop working ?

    I have i7 6700HQ cpu, physical 4 logical 8 cores. I had 4GB ram, when 3 tabs were open at firefox ram was being short and system was slowing down. I added 8GB, now even with 5 tabs and several other programs running ram usage is about 6.5GB. So I don't think any shortage with your 8GB ram. My...
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    Question Strange behaviour of usb ports

    Yes, the main suspect is a resistance occured at supply line. But it doesn't explain why the usb3 ssd's are working with 50cm cable but fails with the adaptor. Also the usb3 flash is working but usb2 flash is not working, even mouse is not working. Probably there is something wrong with data...
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    Question Strange behaviour of usb ports

    Thank you, I have a USB2 4 port hub with external power connection. The hub cannot be detected on USB3/2 port but no problem at USB3/1. I measured several voltage and currents with these ports when hub is connected. Non-working port USB3/2 : Ext power not supplied : 5.00V Ext power supplied ...
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    Question Strange behaviour of usb ports

    Hi, I have Asus X550Vx with W7 pro. It has 2 USB3 and 1 USB2 ports. One of the USB3 port is behaving unexpectedly. Below table shows what is happening. I'm electronic engineer, faced many strange responses but this is something different, couldn't get any idea. Trials are done with two flash...