Jan 24
This article teach you how to D-Link router to restore factory settings,di-524 as an example.
Step 1 With the unit on, place a paper clip into the hole on the back on the unit labeled Reset.
Step 2 Hold paper clip down for 10 seconds and release. (Note: Do not repower unit during this procedure.)
Step 3 The unit will reboot on its own. Once the WLAN light stops blinking, the unit is reset.
Resetting the router does not reset the firmware to an earlier version. It will change all settings back to factory defaults.

[...] reset on the router and reconfigure. With the unit powered on, use a paperclip and hold down the reset button for 10-15 seconds. Release and wait about 20 seconds. DO NOT power off while holding the [...]
im trying to set my dlink 601 router back to factory default can anybody help me out there
[...] http://www.dlink.cc/d-link-router/how-to-reset-router-back-to-the-factory-default-settings.html [...]