I wasn't happy with elementary I was just going to use windows so I deleted the Linux partitions with windows partitions editor. I restarted and my computer went into grub rescue. I tried some solutions I've found but most require a recovery disk from windows. I have one but I can't open bios to boot from a disk. I have a lenovo thinkpad n580 and the button to open bios is f2. I've tried that, and function+f2 but nothing works. Please help!!!