I have a weird problem. I have an older machine. I bought it in 2008. It has an MSI motherboard with usb2.0. It has an intel 5200 dual proc chip 2.5 ghz. with 4gb of ram. I can use a thumbdrive on the USB port and it works fine. I have a wireless chip for k/b and mouse that i boot up with. However when i hook up an external drive to do backup it never sees the drive. The bios is the latest. Any ideas. Been this way since i bought it.