View source for Delete / Erase Password on Cisco 801, 802, 803, 804, 805, 811, and 813 series routers

'''Step 1:''' Hit '''ctrl / break''' directly after powering up the router.   
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'''Step 2:''' Type '''set''' at the boot# prompt. Your router will show you a table with different points. list you the set ios-conf point. For example: set ios-conf     =0x2102. 
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'''Step 3:''' Type '''set ios-conf = 142''' at the boot# prompt, alternatively '''141'''.
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'''Step 4:''' Type '''boot''' at the boot# prompt in order to initialize the router. Now the router will reboot, but ignores the saved configuration.
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'''Step 5:''' Would you like to enter the initial configuration dialog? [yes/no]: answer '''NO'''.
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'''Step 6:''' Type '''enable''' at the Router> prompt.
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'''Step 7:''' Type '''configure memory or copy startup-config running-config'''.
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'''Step 8:''' Type '''show running-config'''.
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'''Step 9:''' Type '''configure terminal''' to change or remove the password from the router.
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'''Step 10:''' Type '''enable secret <password>''' in order to change the enable secret password or type '''NO ENABLE SECRET''' to remove the secret from router(config)#> 
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'''Step 11''': type: '''''NO ENABLE PASSWORD''''' to remove the password from router (config)#>
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'''Step 12:''' Type the '''no shutdown''' command on every interface that you use.
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'''Step 13:''' Type '''config-register <configuration_register_setting>.''' For example: hostname(config)#config-register 0x2102 .
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'''Step 14:''' Hit '''Ctrl / z''' or '''end''' to leave the configuration mode.
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'''Step 15:''' Type '''write mem''' to save the changes.
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'''Step 16:''' Type '''reload'''.
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