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[steve02usa]

Hello Everyone -

I have the DIR-655, Firmware ver 1.11, Hardware Version A3, purchased April 2008.  My DIR-655 has been working very well up till about 3 weeks ago.  For some reason it now goes thru self re-booting several times an hour.  I have actually stood there watching the router and it goes thru a complete self rebooting cycle for no reason. This happens at all hours of the day.  Sometimes in the morning, or the afternoon or in the evening.  It is very frustrating that it keeps rebooting itself.  I have no idea what is going on.  I have not installed anything new, have not been making any changes to the configuration.  I have three hardwired computers connected to the router, along with a laptop that accesses wireless.  Nothing has changed on those computers either.  I have even gone so far as to have a fan blowing on the DIR-655 thinking that it might be overheating.  I have also unplugged the DIR-655 and let it stand for 20 minutes, then plug it back in and within 2 hours it will again start rebooting itself randomly for no reason.  I am totally at a lost as to what is happening.  Is this possibly a defective unit?  Does anyone have any suggestions as to what can be done to fix the problem?  Any suggestions would be greatly appreciated.   Thank you for your time.

[funchords]

Sure, it's possibly a defective unit. 

Before reaching that conclusion, I'd do a hard reset to factory defaults and reapply firmware in a clean way, then reconfigure by hand. 

When you phone in for an exchange, the Tech Support tech will have you do some of this again.  If you've already invested too many hours, then just call in. 

Otherwise, here's the process I'd do --  (download firmware from ftp://ftp.dlink.com/Gateway/dir655/Firmware/ before starting)

1.  Using a pen, hold in the recessed Reset button on the back of the unit
2.  While holding the button in, unplug power and then count slowly to 10 seconds
3.  Still holding the button in, restore power and again count slowly to 10 seconds
4.  Release the button, wait 60 seconds or so for the router to reboot
5.  Without the button pressed, remove power, pause, restore power one extra time.
6.  Install firmware, router will reboot as part of that process.
7.  Without the button pressed, remove power, pause, restore power one extra time.
8.  Now use the router, configuring it as you wish manually (don't restore a saved file)

The extra reboots may be unnecessary, but they are intended to clear any transient states or temporary variables caused by the process.  Avoiding a saved configuration is an attempt to avoid any configuration corruption or confusion caused by changes of features and allowed/disallowed settings that have changed between versions.

[steve02usa]

Thank you funchords...  I will give it a try.  Not certain it will solve the problem, but I definitely have nothing to loose.  It's worth a shot.  I appreciate your suggestion.  I will post later as to what happens after performing the process.  Thanks again!!

[funchords]

I would doubt it, too, if I were you.  It -shouldn't- fix the problem.  Basically, we're hoping to eliminate corruption and misallocated (lost, leaked, reserved and forgotton) memory with this process.  It happens, and these embedded devices have very little to spare.  If you do this and get bad behavior with default settings and a pristine firmware install, then it is safe to say that there won't be much else you can conclude other than the hardware has failed.