Tem que recuperar a BIOS
Siga esse vídeo da Dell
https://www.google.com/search?q=como+resetar+a+bios+dell+inspiron+15+3515&client=ms-android-xiaomi-rev1&sca_esv=7be0101ff559baae&biw=393&bih=720&sxsrf=ADLYWILfnA8Epe_Pnw8XP-o6FBsKE2T3qA%3A1734567765283&ei=VWdjZ-33EIHc1sQPgcen0AE&oq=como+resetar+a+bios+dell+inspiron+15+3515&gs_lp=EhNtb2JpbGUtZ3dzLXdpei1zZXJwIiljb21vIHJlc2V0YXIgYSBiaW9zIGRlbGwgaW5zcGlyb24gMTUgMzUxNTIIEAAYgAQYogQyCBAAGIAEGKIEMggQABiABBiiBEiXqwFQ7w5Yh6MBcAN4AJABAJgBuAKgAeg6qgEIMC43LjI2LjG4AQPIAQD4AQGYAh6gApI0wgIKEAAYsAMY1gQYR8ICBBAjGCfCAgoQIxiABBgnGIoFwgIFEAAYgATCAgoQABiABBgUGIcCwgIGEAAYFhgewgIFECEYoAHCAgcQABiABBgNwgIHECEYoAEYCsICBRAhGJ8FwgIEECEYFZgDAIgGAZAGCJIHCDMuMC4yMy40oAeF1QE&sclient=mobile-gws-wiz-serp#fpstate=ive&vld=cid:ed36221f,vid:1DSz21_RKYw,st:0&vuanr=4