I get this error in device manager: " Windows has stopped this device because it has reported problems. (Code 43)" on boot the keyboard is no detected. hence it didnt let me enter and check BIOS settings. I tried another USN keyboard and it works fine.. i went into bios to check the USB settings.. and everything is fine. I have tried updating.. disabling/ unistalling the USB.. but nothing works. I turn off my computer- unplugged it for 5min, and turned it back on but it still wasnt detected. i have tried connecting it to another computer but the keyboard gives the same "Device not recognized " error. i am running windows 7 RC.. the other computer i tried it on was running windows vista. non of the lights turn on on the keyboard when i plug it in a usb ( i ahve tried it on multiple.) is it safe to assume i need a replacement or need it repaired?... any ideas of what could ne wrong if u disagree. also i have had the keyboard for over 3 month and it has been working perfectly.. until today. i believe it stopped working after i turned off my computer in the morning.. but it actually didn't turn off and was stuck on one of those "do u want to close this program" stage. so when i came back home i realized it wasn't off. so i canceled the shutdown process but realized keyboard wasn't working.. so i did a restart. and win7 did an update while it was turning off.. keyboard has not worked since this morning. oh i also tried system restore to 2am last night(when i was on the computer last night) with no success. any help is appropriated.