It had all of my translating pages in it.
It seems you don't have any backup copies of your important data.
I would open up the computer, remove the hard disk (which is nowadays likely to use a SATA connection), buy a SATA USB adapter, use that to connect the disk to another PC or notebook and make a backup copy of your translating pages.
Ideally, if the data is important, you should always make sure to have multiple copies at more than one location (i.e. not all in the same building).
Then you can proceed to fix or replace your computer without worrying about losing any important material.
Then make sure you always make backup copies of any new or changed data at least the same day you create or change it. Many people have their computers do this for them every day. You can use a local USB-attached disk and backup to some secure remote "cloud" storage service (or several, they occasionally go bust and lose your data).
when I came back to turn it on, nothing happened.
See Investigating cause of dead computer and How to test a power supply?
