Toshiba A305-s6858 Vista Home Premium SP2 64 Bit I have 4 USB ports available, 2 on the left and 2 on the right. I can't seem to get any of them to work any longer. When I plug anything in on the two on the left, nothing, not a thing happens. When I plug things in on the right, it recognizes it and it installs but tells me the device is unknown. No matter the device, it's always unknown in either port. Until yesterday, when I removed some upper filters and lower filters associated the GearA??? it constantly was giving me that "plunking" sound like something had been plugged into a USB port and it was "not recognized". That was driving me nuts as I could not get it to stop. I have been reading on here for a couple of days and gone through all the troubleshooting: Cleaned drivers with Driveclean.exe in folder system32 Uninstalled the devices in device manager as instructed. Ran SIV - Service Information Viewer Updated chipsets and drivers Gone thru instructions to remove upper and lower filters with Regjump (however there are other upper filters and lower filters associated with other stuff in the Registry) Read thru instructions and ran serviwin. I've even been inside the computer to make sure no wires were loose. When checking USBSTOR with serviwin here is what I get: USBSTOR USB Mass Storage Driver Stopped Manual Normal USB Mass Storage Class Driver 6.0.6002.18005 (lh_sp2rtm.090410-1830) Microsoft Corporation Microsoft® Windows® Operating System C:\Windows\system32\DRIVERS\USBSTOR.SYS Error 1058: The service cannot be started, either because it is disabled or because it has no enabled devices associated with it. 5/14/2011 10:48:04 AM system32\DRIVERS\USBSTOR.SYS I've tried to "start" USBSTOR, but it won't let me. At this point I'm here with 2 laptops and 8 USB ports and can't get one port to work. ( I have an HP where the ports have stopped working too, but I can't only deal with one at a time...lol) I'm in need of some serious, get down to business help, and unafraid! Thanks so much!!