if it's causing a blue screen, disable the auto-restart feature so that you can see what the BSOD error is when it next happens (it's in My Computer, Properties, Advanced, Startup & Recovery settings.
Also, it's not a power problem is it? Is the device self-powered (has its own mains plug) or taking its power from the USB socket?
Windows 7 x64 Ultimate Edition, Gigabyte Z77-D3H, Ivy Bridge i7 3770, nVidia GTX480 1.5Gb, 16Gb Corsair 1600MHz, Creative X-Fi, Seagate 500Gb SATA II, DGM 23" Widescreen TFT
"Men never do evil so completely and cheerfully as when they do it from religious conviction" -Blaise Pascal