Hi again to everbody !
guys i am in one trouble again and hope you can help me out like always. i googled to get my solution but can't figure it out. i am using an external maxtor drive 500 Gb from 2 months. untill yesterday it was fine. then suddenly a message came that i need to change something usb for getting high speed. and then there is no more detected hard drive. it was using I latter. i tried to detect by system managment but it not showing there. even i installed my windows again and updated it to SP3. i put my hard disk to laptop and its working there. only on my desktop it got problme. from 2 months it was connected to desktop and i just remove from desktop to clean my PC. but when i put again this all is happening. i tried many antivirus like Mccafe Kaspersky 2009 and SuperAntiSpyware Professional and Ashampoo antispyware all this softwares one by one but useless. i triend many time to change the USB port but useless. other usb devices like printer scanner are working on the usb port. sometime like from 50 times when i am trying to change port and power off to hard-drive it will be recognised as unknown drive. it has an green light which is steady. guys i will be thankfull if somebody knows about it.
Edit : guys maybe i got some kind of virus in bios or Memory ?? just be sure to tell me guys i mention everything above. thanks for help