I think I had a bitcoin account about seven years ago but my computer crashed and I got a new one and sort of forgot about it. Can I reactivate that account? What would I need to do that?
You can, but only if you can find the wallet file that was stored on your old computer. Or if you saved it somewhere, the recovery phrase. Then you can use any wallet software (such as the one provided by Bitcoin.com) to recover the money from that file.