I have a 10 year old Dell desktop running XP and am getting blue screen errors. Dell support has recommended a bios update. I have downloaded the file, but don't know how to install an iso file. Thanks.
You don't install an ISO file. You must burn it to a disk with an ISO burner. When you pop the disk into your computer it will run.Below is a free ISO burner.It's very good and I've used it many times myself.