I have a Dell Inspiron 14-3452 that came with Windows10. I forgot my password and gave my laptop to a guy who said he could fix it. He wiped out windows10 and then installed an unregistered copy of Windows10 Pro. I deleted that and decided to go with Ubuntu. I downloaded the version for 3452 from Linux onto a pen drive. I tried to install it and get : Cannot find kernel image: Linux. I  am not very computer savvy but I can follow directions. If anyone knows what I can do to get Ubuntu to boot, I will certainly be grateful for any assistance you care to share. Thanks all !