Marvell Libertas 802.11 b/g drivers

I have a wireless lan PCI card and i installed and booted vista for the first time. installed flawlessly worked and i picked up my wireless network. I rebooted for whatever reason and my network was not being detected i checked the drivers in device manager and it had an exclamation mark next to the wireless card driver. I open it up and get error code 10 cannot start. So i start doing some research and find out everyone with this card on 64 bit vista has the same problem and one person's fix was to load windows in f8 mode disable driver signing enforcement. So i give it a shot and sure enough it worked. I rebooted to test this theory back in the disabled driver signing enforcement and bam code 10 once again. i reboot once more into normal mode and then the driver is working again with no code 10 and it detects networks. and now it takes 100 tries just to get it to work so now i am feering the reboot everytime i get it to work PLEASE HELP!!!