w7
First, please disconnect all USB devices and then perform the following steps:
Click "Start" button, type "devmgmt.msc" (without quotation marks) in the "Search" bar and press "Enter". Click "Continue" if necessary.
In Device Manager, double click to expand "Universal Serial Bus controllers", right click on the Host Controller, click "Uninstall" and click "OK".
Repeat the step 2 to uninstall all items under "Universal Serial Bus controllers".
Then, restart your computer and Windows 7 will reinstall all USB controllers automatically.
for xp or earlier
click start right click on computer select properties 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
if you need more help with this or if i have missed the problem post a reply
hope it helps
WARNING: Before you start troubleshooting remember that you are dealing with electricity that can KILL.
http://www.kitchentablecomputers.com/static.php - rules
Test all power and data leads that attach to your hard drive IDE,SATA
the leads from your (motherboard to your hard drive) make sure they have secure dust free connections and are not faulty or just replace them they might be faulty
if its a 40 pin flat ribbon type it will be the first to fail
make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty
even something as small as a faulty electrical fan and its lead can cause you problems
computers need all power and data to continue through every working device and to have an end so any faulty leads will end up with a computer error
make sure your graphics card is securely seated with no dust built up or in the socket
if you remove your graphics check the socket to make sure its dust free
restart your computer then reinstall it this should activate found new hardware wizard
if your computer came with a motherboard disc the sound drivers could be on it
click start control panel administration tools computer management device manager scroll to sound video and game controllers you might see a yellow question exclamation mark? ! or a red X Right click to reinstall drivers
click start control panel sounds and audio volume advanced speakers make sure you have selected the
(appropriate speakers) also audio you will find 3 drop down lists make sure you have the selected correct speaker settings there
click start control panel sounds and audio devices select advanced there might be a tick in the mute box untick it
if his does not fix the problem
click start control panel sounds and audio devices you can adjust the volume there also select speaker volume you can change your settings there you can also tick in the box place icon in taskbar for any further volume control settings you will need to right click on the speaker volume icon system select adjust volume
click start control panel sounds and audio volume advanced speakers select the appropriate speakers
from the drop down list or navigate to the device manager scroll to system devices + to expand system speaker right click properties then select use this device (enable) also you might check
the speaker plug/outlets is usually at the back of the computer or if its a laptop on the side
you will have to open up the computer to check the lead attached to the rear of the input plug make sure the connection is good with no dust as dust causes static electricity
clean your computer of dust using a fine air blower from a compressor making VERY sure that there is no MOISTURE in the air line or use a can of compressed air specifically around the sound card and the CPU central processing unit dust causes static to build up in a computer
if its a desktop swap the speakers around if one still does not work its either a faulty speaker or the speaker connection
hope this helps
if your computer came with a motherboard disc the sound drivers could be on it
click start control panel administrative tools computer management device manager scroll to sound video and game controllers you might see a yellow question exclamation mark? ! or a red X Right click to reinstall drivers
click start control panel sounds and audio volume advanced speakers make sure you have selected the
(appropriate speakers) also audio you will find 3 drop down lists make sure you have selected the correct speaker settings there
click start control panel sounds and audio devices select advanced there might be a tick in the mute box untick it
hope this helps if you dont have a motherboard disk you will have to download the drivers http://download.cnet.com/2000-20_4.html on the home page you should see a search tab just type in what you are looking for
IE: motherboard name audio driver you might have to try a few times to get it right
if his does not fix the problem
click start control panel sounds and audio devices you can adjust the volume there also select speaker volume you can change your settings there you can also tick in the box place icon in taskbar for any further volume control settings you will need to right click on the speaker volume icon system select adjust volume
click start control panel sounds and audio volume advanced speakers select the appropriate speakers
from the drop down list or navigate to the device manager scroll to system devices + to expand system speaker right click properties then select use this device (enable) also you might check
the speaker plug/outlets is usually at the back of the computer or if its a laptop on the side
you will have to open up the computer to check the lead attached to the rear of the input plug make sure the connection is good with no dust as dust causes static electricity
clean your computer of dust using a fine air blower from a compressor making VERY sure that there is no MOISTURE in the air line specifically around the sound card and the CPU central processing unit dust causes static to build up in a computer
hope this helps
The most common way that most of us know on how to reset or clear the BIOS password is to physically remove the power from the computer by disconnecting the power plug and then removing a battery for 30 minutes from the motherboard.
Another way is to reset the clear CMOS jumper on the motherboard itself.
Both of the 2 methods mentioned works because most motherboards use a battery to sustain the BIOS/CMOS settings for the motherboards PROM chip.
So by cutting off the battery power, the BIOS/CMOS settings will be erased. cmos battery Under the keyboard or bottom of laptop -
If you are working on a laptop computer the location of the dipswitch (almost never a jumper) can be under the keyboard or on the bottom of the laptop in a compartment such as the memory compartment.
or you might give them a call
Dell Inspiron BIOS Password Recovery
Each Dell Inspiron has a master password that clears the BIOS password. Call Dell Technical Support at (800)624-9896 to get this number.
Dell Technical Support will request the Service Tag and Express Service Code from the bottom of the Inspiron.
If the current user is not the original Inspiron owner, Dell will transfer the used Inspiron's registration from the original owner with only the Service Tag and Express Service Code from the tag on the laptop.
To transfer a used Dell Inspiron's registration, fill out the Transfer of Ownership form on Dell's web
hope this helps
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