Ineed a power adapter for a M685-E

yes a new power supply or mainboard

remove Huge battery first.
run on AC power pack only , even forever.
see it does run
hold power button for 10seconds and release.

it does not need that battery to run ever. and is shorted and also like that is fire hazard. get the heck out of here and out of home ,
be safe. never keep these old batteries in any home.

Does it have to be THAT model? There are 1000's of compatible car chargers out there. Try eBay.

http://www.engeniustech.com/index.php?option=com_content&view=article&catid=93:usb-adapters&id=296:80211g-high-power-250mw-long-range-wireless-g-usb-adapter-with-detachable-antenna-and-superg-108mbps&Itemid=126

This link will bring you to a page with the driver, just manually install it and you should be good to go.

1. check you AC adator you must find 19V as output voltage.
2. try to remove your battery and power on without it.

Here ya go.

http://cgi.ebay.com/AC-DC-Power-Adapter-Protron-Flat-PLTV32-LCD-HDTV-/150506573906?pt=LH_DefaultDomain_0&hash=item230ae41052

Hi!

Incredibly, the AC charger for your GPS is incredibly inexpensive.

I found a link where you can purchase them for a very good price!

http://www.amazon.com/gp/offer-listing/B0026Y4O1O/ref=pd_sxp_olp

Hope this helps.

If it is not taking a charge your power adapter is loose. To confirm this press on the cord where it plugs into your laptop and continuously press the power button if it powers up thats your problem. You may need to press the cord at various angles before you get it to power up push it in and pull to the left, then the right, up, down and so forth.
If this is your issue you can temparly fix it by using duct tape once you find the right position for the cord that will work for awhile but you will need to get it soldered eventually. If you know someone who knows how to solder ask them if they will do it for if not the repair will be approx. $100

It is probably being caused from over heating.

Are the cooling fans running? If so, get a can of air from an electronic store, and blow the cooling system out from the exhaust in to the fan. Stop the fan from turning with a paperclip or something.

yes you need a wireless router... make sure it is no higher then the standard of your wireless you have... b g or n. the network key it's asking for is likely someone elses network... unless of course you do have a wireless router... then i'll explain how to get the key