|won't power up|
No light, no beeps, & no fans spinning right?
If i am correct replace the PSU first.
If u don't mind people recovering your personal information u can just cut and paste your data on another drive but if u do mind u have to wipe the whole drives after backing-up your data. For this operation use Darik's Boot and Nuke.
The other option is to use File Shredder software to permanent delete the data.
You know the real meaning of peace only if you have been through the war.