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Sometimes when a flashmemory stick or USB external hard drive fails because it was not removed fromthe USB port properly. If the device is removed byjust pulling it out of the USB port, it can cause the flash device to fail, youmust click on the Safely Remove Hardware icon on the Task Bar and select thedevice you wish to remove and only do so when instructed to do so
When the flash memoryUSB hard drive device appears to malfunction it maybe possible to restoreit by reformatting it. Insert the flash or USB hard drive into the USB port then Click on Control Panel - AdministrativeTools - Computer Management - Disk Management.
Then right click on Disk 1removable drive and click Format. After the flash drive has been formatted itwill indicate that it is Healthy.
You need to format the flash or external drive. Format thedrive as primary drive and in FAT32. (FAT32 will allow data to be exchangedbetween MACs and PCs also between XP/Vista and earlier versions of Windows).
Otherwise format the USB flash drive in NTFS. Insert the flash or external hard drive into the USB port then Click on ControlPanel - Administrative Tools - Computer Management - Disk Management. Then right click on Disk 1 removable drive and click Format. After the flashdrive has been formatted it will indicate that it is Health
three solutions: 1- go to the bios (press "delete key" at start of turning on of computer) and enable "USB Mouse" a "USB Keyboard" (sorry i can't remember where really it is). if it doesn't work : 2- reinstall your OS. or 3- update BIOS of your. (download a bios update and install it by a boot disk)
USB devices are allowed to pull up to 400mA for each port.
Unfortunately if you have a keyboard with the handy USB ports on it and
you plug in your memory stick, you still are left with 400mA for your
keyboard AND USB stick COMBINED. The keyboard will draw it's power from
the USB port on the computer, so unless you have a device that has it's own power source, each port on your computer can draw no more than 400mA.
Is the laser mouse USB? If so there is a grouping of settings in your BIOS that has to do with USB storage devices, mice, and keyboards. It would appear that your USB keyboard controller is already enabled but the mouse and USB storage devices are both disabled. If you need help navigating through the bios let me know or look it up on google.
All the USB ports were working before he installed SP3 and rebooted. After that only the mouse/keyboard ports worked. Same thing happened to me. No other changes were made, so something added/change by SP3 is the culprit.
Questions is...what did SP3 do to break USB and how to fix it?