Ok I have a Dell xps desktop running vista. When I bootup I am getting a low voltage disk error which I can bypass by simply pressing f1 and then my computer runs fine. I'm pretty sure this is the CMOS battery that needs to be replaced. My question is I'm trying to delete the hard drive using boot n nuke to do a clean install of xp but when I put in the boot disk for boot n nuke I get that low voltage error. Is there anyway to bypass it so that I can run boot n nuke. If I press f1 when I recieve the error my original os vista begins to load