to use the reset hole on top, the archos needs to be on
lets see... i doubt its the usb connector if this happened suddenly
what system are you using? Mac, Windows XP, Windows Vista, Linux?
ill just list some things that "might" be the problem (some are improbable but... ill just list it lol)
1. very few archos devices had batteries that last only a couple hours or batteries that just died; you might need to buy a replacement battery (however, archos does not sell internal parts and you need to buy it from another dealer, which shouldnt cost much)*
2. a driver in your computer might be turned off, not working, up to date, or has an error. Try this program called Driver Detective (http://downloads.drivershq.com/DriverDe ... ective.exe
). It detects all the different drivers on your computer and tells you the status of each driver. This is a freeware and doesn't cost money (it is not a virus too. you can scan it for yourself)
~~the program: once you install it, in the main page should be a button that says "Scan Now". After it displays all the installed drivers, look under "driver details" where it lists all the drivers. Make sure the following things have a check mark in front of the driver
(this covers drivers regarding the archos device)
a. USB Mass Storage Device - a404
c. Archos PC Hard Drive USB Device
Repost up ALL other drivers that has a red X next to the name also just incase
3. Since the usb isnt connecting to the computer AND your dock, then the arcos might have a disconnected wire or a damaged USB port; or it could be the other way around: your cables might be damaged or your dock (unlikely :X)
*if you are planning on doing some internal surgery on your archos, then you should read the topic on how to open the archos without voiding the warranty. "Do not open it up. There are no user-serviceable parts. inside. Opening will void your warranty." --> yes it does say that but they just don't want unexperienced people trying to fix it themselves... there are things you can do inside, but not for newbies.
*www.newmp3technology.com for replacement parts not found in archos website
Reply back with (summary): Computer Operating system; driver list (suggestion #2 above)