Today my friend handed me two identical USB flash drives and asked me to fix them. He was not very specific about what happed, why they don't work, what he did, or anything, I'll keep pestering him, but even if he would tell me, he isn't the kind of person to know what he did on a computer. Both drives seem to have an identical problem and refuse to show up on my computer. In device manager, they don't show up in the USB ports, but do show up under Other devices as yellow question marks. Right clicking and looking at properties, the device status says "No drivers are installed for this device. " on both drives. I've tried this on two different computers with the same result. I've tried formatting them with OCZ format utility, HP USB format utility, lexar's format utility, UMP tool, test disk, and hdd low level format tool, none of which even see the drives. I've tried going into the bios and looking at any USB devices, it didn't show up, but i didn't look too closely. A program I found called Chip Genius v 2.64 did see it. I'm pretty sure it lists all the usb devices in my computer, my mouse, keyboard...anyway it sees the drive as a "USB Device", the information listed under it for both drives is this: Device Name: +USB Device PnP Device ID: VID = 07F2 PID = 0001 Serial Number: 5&&10C94DEA&&0&&4 Revision: (Information not returned) Device Type: Standard USB device - USB2.0 Full-Speed (USB1.1) Chip Vendor: (No match record) Chip Part-Number: (No match record) Product Vendor: USB Product Model: Device Tools on Web: (N/A) Now, i'm at a loss at what to do, so I come to techspot for help. Thanks in advance, and keep in mind that they look like low quality nameless USB drives, so they may just be dead, although since both seem to have died at roughly the same time, I suspect my friend would have something to do with it. I honestly have no idea what he does with his drives, all he does is put games on them but he comes to me with dead drives pretty often. So far i've been able to fix them, until now.