So needless to say, all the info it there but you just can’t access it. If you plug something in to your machine now, Windows will get confused because it wants to give that new drive a letter but it’s already being used. Now, take into consideration of partions or being on a server where you have access to drives on the server. So the typical set up you’ll normally see would be A (Floppy), C (Hard Drive) D (CD/DVD) E (CD/DVD). Some of you might be experiencing this… When you plug in a USB or any external device, Windows assigns it a drive letter. I’m on a server and geeze I have a lot of drives. To all: One thing that I’ve learned with Windows is that assigning a drive letter is critical and Windows does this automatically. The problem is that any or all of the above items could possibly impact your USB problems. An up-to-date spyware and virus scan wouldn’t hurt either. If any software came with the devices you’re having trouble with, make sure that’s up to date, and installed properly.If you’re running Windows XP, run the system file checker to ensure that Windows itself is not damaged: What is the System File Checker, and how do I run it?.Getting updates to these drivers will depend on the manufacturer of your computer, or the manufacturer of your USB port add-in if the USB ports are on an expansion card, so you’ll need to check with them. The drivers are the hardware-specific interface between Windows and the USB ports. Make certain that your USB hardware drivers are up to date.Exactly where and how to get an updated BIOS will vary depending on the manufacturer of your computer – check with them. BIOS support is an important part of USB support, and just like the operating system, there have been updates. Make certain that your system BIOS is up to date.There have been updates to the USB support in almost every version of Windows, especially the 9x and Me versions. Make certain that your version of Windows is up to date by visiting Windows Update.

My hp pendrive is not detecting