Hello there, you can try the following:
*You should have a copy in txt format on your PC used to console into the router
*console into to the router and power on
Once up the router will prompt you to enter the initial configuration mode type in no press enter
The router will ask you if you want to exit the initial configuration type in yes
* at the next prompt which should be router> type in the following:
router>en <enter>
router#config t <enter> NB the pound or hash sign
router(config)# Now, open your text file select all and copy and paste the content in here
Once done type in end
If you have a a hostname command pointing to a different name you should see that name like
newname# now just type in wr mem
Next do a show ver making sure that on the very last line the configuration registry value is 0x2102, if this is the setting then type in reload confirm that and on the new reload the router should run you configuration. Cheers and good luck