Generally, yes, if it's the same version, (e.g., "Home Edition, or "Professional", etc.Then the Operating System disk should get you going well enough to start all the necessary updates You may need to go to Dell and download the model specific driver files, updates, etc. to get everything !00%
Make sure you have the right Microsoft Product key for the installation.
Best thing you can do is back up your system and keep it somewhere separate, with all this info. There are many good free utilities for system specs., such as Belarc Advisor. It's easier to fix a broken system when you can automatically put everything right from backups, where ever possible.You are thinking ahead, instead of after a disaster!
Good luck.!
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