I have an Acer Aspire and when I switch it on the Hard drive clicks and I receive a no bootable data message. I have gone into bios and it won't allow me to change the UEFI. I've downloaded windows onto a memory stick which fires it up but then says its already installed. I really only need the things that are on the hard drive if possible as was going to buy a new laptop soon anyway. If it can be fixed that would also be great. I can't think of any reason why it would be doing this. I have also bought a new charger lead but this hasn't changed anything.