Welcome to the forum.
First, a few questions, please:
What version of Ps are you needing to reinstall?
What OS version are you using?
Are you reinstalling from physical media, or from a download?
Did you De-Activate the originally installed version, if CS, or later?
Do you get any error messages?
If so, what do they say?
Good luck, and let us know a bit more please.
I resently purchased photoshop but I don't know what verison. My computer crashed and I lost everything and now need to reinstall. I have windows 10. My account is Beaglebleu2@cs.com.
Can you help me.