text: First off, most computer power supplies are dual voltage. You should see a switch on the back of the power supply. Set that to 240 volts and you should be fine.\nWhy did you remove the hard drive? Did you have 2 drives before? If so you will need to go into your BIOS and remove the second drive. Outside of that, what does the error that requests you to hit F1 or F2 say exactly? Without knowing why it is asking you to do that no one will know what the problem is.