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Usb devices not detected

I'm the owner of a VGC-LA series (PCG-242M) Desktop all-in-one computer.
I have problems with my USB accesses.
My control panel doesn't detect my HP Photosmart C5283 printer (working yesterday on that same computer) and my Ipod.
I have 4 usb-drives; none of them are detected.
What can I do...
(When I first installed my computer, in april, the same thing happened to my CD-DVD-drive, but then for no reason, it reappaeared...Culd it be a weakness of the system?)
How can I fix this?
Thank you for your quick answer,

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Re: usb devices not detected

Well, I am not sure about Hp photosmart, But most printers, Like all hard drives, you must install a CD-Rom disk in order to do this, I see that your CD-DVD-Drive was not working also, It should've came with a disk to install it on probably floppy, or your old driver, Hope this helps.

Posted on Nov 29, 2007

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Pen drive access denied

USB ports and devices make connecting to another computing device convenient.
USB technology has been around since 1996, and is a feature found on most modern computing devices.
If your device is denied access to one of its USB features, do some troubleshooting to isolate and resolve the problem.
Some computers come with a security feature that automatically denies access to a USB device, such as a flash drive, if harmful content is detected.
Installing an anti-virus software application and regularly scanning the computer and any connected USB devices can help you avoid experiencing denied access to a USB device.
Avoid opening USB flash drive files that you cannot identify or do not recognize, as these types of files are how viruses find their way onto unprotected computers.


Inserting an incompatible device into your computer's USB port can also cause you to be denied access to your device's USB features.
For instance, if your computer supports USB 1.0 technology and you insert a USB 2.0 or USB 3.0 connector, the computer can experience interfacing problems that may cause a "USB access denied" prompt or situation.
If other USB devices begin to malfunction after inserting an incompatible USB cable into your computer, turning the computer off and back on again may resolve the situation.

USB flash drives, also known as pen or thumb drives, are among the most common types of USB devices used in conjunction with computers.
Most USB flash drives are formatted using one of three types of formatting methods: FAT16, FAT32 or NTFS.
If you've formatted a USB flash drive using one method, used it on the computer and then reformatted the drive using another method, you can be denied access to the flash drive through the computer's USB port.
Wiping the flash drive clean and reformatting it again can resolve this type of problem.


Many computer accessories, including printers and pointing devices, connect through the machine's USB ports and can interface interchangeably with multiple computing devices.
This feature increases the risks of picking up viruses and experiencing unauthorized reformatting. Limiting the amount of computers your USB devices accesses can help you avoid these situations.
Damaged USB cables can also make it impossible to access USB devices when they are connected to your computer.
USB cable damage usually occurs at the points where the cable and its connectors meet. Replace any damaged USB cables.
You have to be the computers administrator to change any values on any hard drive on your computer.
Click start control panel user accounts on the users tab click the name of the computer Administrator you must have full control.
Click start click to open on my computer you should see your usb drive could be E: or something right click select properties there will be an array of options
select the sharing tab option then advanced sharing make sure you have a tick in the share this folder box then click permissions make sure you have all 3 boxes ticked full control changes and read in windows 7
If you are running a Windows XP OS then you might be able to:
Click start right click on my computer select open
Right click the icon of your Flash Drive (It should be F:/ or something)
Click Properties in the menu that comes up
Click the Sharing tab
Click permissions
And finally, click Allow next to Full Control.

Sep 06, 2013 | PC Desktops

1 Answer

Hp dc7100sff cant detect usb drives except printer


For this you sholud go to in xp my computer ->right click ->manage->device manager->usb ->right click and give to all update driver this is valid also for win 7

Sep 24, 2012 | HP Compaq dc7100 PC Desktop

1 Answer

Hi I need vaio pcg-242M drivers contact thanks

Hello Prosper, I found drivers for a Sony Vaio VGC-LA1. It would appear that it is just a different name for the same model. These should work fine for you. Hope I have solved your problem, have a great day Prosper!

May 08, 2011 | Sony VAIO VGC-RB34G PC Desktop

1 Answer

Computer: Sony Desktop Model: PCG-242M. Computer does not start, with the inclusion hear one long beep and two short beeps. What is the problem?

Based on what you have presented...
1 long 2 short - (Video Controller Failure or faulty add-on card

Do you have an installed video card? Does the unit have a built in Card? (In other words part of the mother board?)

If you have an installed card check that it is not loose... If it is still not functioning (and)

If your unit also has a built in video card that is disabled... go to the BIOS and enable it... see if your unit will boot up...

If the video card is not loose and you do not have a built in card... you may want to see if you know someone with an extra card to loan... or purchase a new one....

Mar 31, 2011 | Sony VAIO VGC-RB34G PC Desktop

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Looking for instruction manual for sony vaio desktop model pcg-281L


PCG-281L is the hardware configuration code of the computer. Based on the configuration code the computer belongs to VGC-LT1 series computer model. From the below link you can download the Manuals and Specs for this series models:


Dec 11, 2010 | PC Desktops

1 Answer

Hello, i just cant access anything through my usb, can u help me?

Hi ,

Please try these steps that im mentioning and i hope it works out for you .

go to ?start ?right click my computer ?click on manage?device manager .You will see the drivers listed with a + sigh next to it .Look for universal serial bus controler and then click on the + sign nex to it ...then right click un uninstall usb root hubs so anything that has the word hub right click on it an then click on uninatall restart the computer and then check if the usb gets detected ...

If this does not work go to the hp website ,once the page opens up and where is says select a country or a region select united states then click on the arrow and where it says for product put the model no that is HP Pavilion a420n then click on the arrow and then select software and drivers downloads from the next page which will finally take you to the Select a download page then it shows you the compatible software and drivers.The fourth option saya BIOS IN BLUE cliclk on the BIOS update for A7V8X-LA motherboard and on the next page click on download .A dialogue box opens up so click on save and then save it on the desktop .Go to the desktop and then run it .Restart the computer and then it should work

all the best

May 12, 2010 | HP Pavilion a420n PC Desktop

1 Answer

I can't use any USB, it needs a registration on my laptop.. but i don't know how.. help pls!

If you can't use any usb device, the usb function is disabled.

  • To enable the usb function you have to access the Bios setup of your Desktop.
  • By pressing Delete button, F2/F11 button or Esc button in order to open the Bios Settings.
  • During power on the button menu will show up (press the key right away before the Windows starts)
  • In Bios setup there are several menu. Check each of them until you found the settings for Usb Functions
  • If the Usb Functions is disable change it to enable
  • Then go to the Save Menu and Save to apply the settings you created. (Sometimes F10 button is use to save the settings)
  • Restart the computer
To check if the Usb Function is working in windows mode open:

Start Menu > Control Panel > System > Hardware tab > click Device Manager.

Under Device Manager
click the ( + ) sign in Universal Seria Bus Controller

You'll see all the Usb devices detected in your computer

Jan 14, 2010 | PC Desktops

1 Answer

Usb ports no communication with compurter but supplies power. what is wrong ?

Click Start
Click Control Panel
Click Classic View
Click System
Click Hardware
Click Device Manager

Does the 'USB' branch of the tree show the USB ports?
Is there an 'Unknown Devices' branch of the tree?

Either way, the software "device-drivers" for the USB ports are not installed, or not installed correctly, and so you'll get the symptoms that you've observed -- power without device-recognition.

Access and click "Detect My Computer", and download and install the device-drivers for the USB ports.

Dec 30, 2009 | Dell Dimension 4600C PC Desktop

1 Answer

Hte usb 2.0 ports are not recognised

Click Start
Click Control Panel
Click Classic View
Click System
Click Hardware
Click Device Manager
Does the "tree" show any "question-marks"?
Expand the 'USB' branch of the tree.
Does it show that the device-drivers for the USB 2.0 ports have been installed?

and click "detect my system",
and download the offered USB device-drivers.

Dec 01, 2009 | Dell Dimension 5150 (DIM515MIN) PC Desktop

1 Answer

USB Troubles

How To Refresh and reinstall USB Ports Of Your Computer Hello there, the other day i tried refreshing and reinstalling the USB ports on my PC, as some of my connecting devices are not recognized. I present the detailed procedure on refreshing the USB ports.
Let’s go!!

Here are the steps to refresh/reinstall/uninstalling the USB ports on the computer.

The USB port needs to be refreshed to make sure that no other device has captured the USB port of the computer. The Mouse, video camera, your external USB hard disk; what ever it may be.

Follow the steps given below to refresh USB ports.

1. Right-click My Computer icon on the desktop, and then select Properties.
2. Click the Hardware tab.
3. Click the Device Manager Button.
4. Click the plus (+) sign to the left of Universal Serial Bus controllers.
5. Right-click the device listed under Universal Serial Bus controller and select Uninstall.
6. Click OK to confirm the removal of the device.

Please note, repeat Steps 5 and 6 until all the devices under Universal Serial Bus Controller are removed.

7. Shut down the computer.

CAUTION: Ensure that the Shut Down option is selected, instead of the Restart option.

8. Wait for 5 seconds and then restart the computer. When the computer restarts, a "Windows has detected new or added hardware" message window will open.

The above steps will refresh the USB ports.

Now connect the USB devices like mouse, video camera, your external USB hard disk...USB hubs...whatever you like and the drivers should install automatically.

Tip: It is always recommended to connect the main USB devices at the rear end USB port. As they require more power to initiate.

The above steps are for XP operating system. When coming to the matter of Vista, please note the changes below:
1) Right-click Computer icon from the desktop , and then click Properties to open the System Properties window, and then select the Device Manager tab.

2) Click the Plus (+) sign next to Universal Serial Bus Controllers/Root hub.

3) Click the USB Composite Device entry to highlight it, and then click Remove. If a screen appears to confirm the deletion, confirm the deletion.

4) Disconnect the USB cable to the all-in-one, wait a couple seconds, and then reconnect the cable. This should restart Windows device detection (Plug and Play).

5) A New Hardware found screen may appear, click next through all of the screens that appear for the Wizard to install the USB Composite Device. Click Finish once the wizard completes.

Sep 28, 2009 | Dell Dimension E310 PC Desktop

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