Question about Toshiba Satellite Computers & Internet
The com ports aren't recognized by the device manager. Reinstalling drivers can't find device as a result COM1and LPT1 don't work. viewing the device shown as a? reveals ""Unknown Device". Also, may or may not be associated, plugging anything into any USB PORT locks up the entire unit, key pad, keypad, "CAD" doesn't allow access to the session manager. total lock up.
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Posted on Jan 02, 2017
regisrty key maby u could try repairing your windows back it all up redo it maby sum spyware or sumthing if not bad board not powering good engh to usb
Posted on Jan 22, 2008
I have the same problem with my Compaq Presario V2000. Lost both USB ports and HP tells me that the motherboard has to be replaced at $300 +..I searched and found a PCMCIA card with two USB ports for $10. No problems with the USB ports on this card..great and cheap solution.
My belief is that the compaq usb ports do not have power limiting circuitry therefore allowing you to overload the output power on the ports. My ports failed after I downloaded into a burglar alarm system I was programming.
Posted on Jun 24, 2008
SOURCE: Usb ports do not work
Try going into device manager and deleting the USB devices, Reboot and let Windows try and reinstall the drivers. If that doesn't fix your problem post that it didn't work and I'll get another message.
Posted on Dec 16, 2008
SOURCE: acer notebook usb not recognized
Sounds like a hardware issue. I would guess that there is a bad connection between the usb's and the motherboard. If you are comfortable dismanteling the laptop and re-soldering the usb's than give that a try, but I would recomend you give it to a pro.
Here is a link that explains the process. http://www.insidemylaptop.com/taking-apart-acer-aspire-5100-laptop/
Posted on Jan 19, 2009
Tips for a great answer:
Nov 07, 2015 | Acer Computers & Internet
on Jul 08, 2010 | Computers & Internet
May 07, 2012 | HP Pavilion ze2000 Notebook
click start control panel administrative tools computer management device manager scroll down universal serial bus controllers you could see a yellow question / exclamation mark? ! or a red X
you will need to update/reinstall drivers
right click to reinstall drivers
if you can see your usb drive but its not working
ports (com&lpt) right click update driver if this fails to fix the problem
check the USB leads that attach to the motherboard usually red white green black make sure they are securely seated and have no dust build up on them dust will cause static and a lot of unforeseen problems to a computer and its parts
hope it helps
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