- I assume you bought it second hand, not new.
- Can you tell more on "tries to open windows but fails"? For example, the exact error message.
- https://www.lifewire.com/where-can-i-download-windows-vista-2626314 tells where to download an unofficial original version of Windows
Anyway, there's a very good chance this isn't a Windows issue, but a hardware issue. You only know for sure when you run the makers diagnostics (in a Dell via something like ctrl-F12 on boot, check the user manual), try to reinstall Windows or investigate after booting into a Linux disc or stick (free to make).
One of the possible hardware issues is a broken hard disk. That might be cost-effective to replace.
Dell Latitude E5500 computer running Vista Business. The computer froze, and task manager wasn't working, so I removed the battery as a last attempt. Unfortunately the computer wont reboot now. It tries to open windows but fails. Any hepl would be appreciated. I have a valid windows product code, but don't have the disc. We bought the laptop last year and it has worked well until now. I tried hitting f12 during startup for more options, and tried to boot in safe mode, and that didn't work either. Thanks, Ed