Siemens Speedstreem 4100 ethernet adsl Modem red power light

take it to the store to have them look it over they will give you advise on what you should do and where to take it

Does the DSL light come on at all when the modem is powered up?? If not, then it looks like the modem is bad.

When the modem is first powered on, all of the lights should come on and then go off after a few seconds. The power light should then begin to blink while the modem does a self test. Once that is done, the DSL light should come on and begin to flash red. If it senses a DSL connection, it will change to flash green until it has established a DSL connection. If it does not detect a DSL connection, it will continue to flash red. If the light does not flash at all or if the power light continues to flash after a minute or so, then the modem is most likely bad.

Let me know if you need more help. :)

Try restarting the modem by either turning off the power button, or plugging out the modem power.

If the internet still frequently disconnects, it is most likely your ISP's (internet service provider) problem. Call them up with this issue, and they should either re-activate your internet for you, or give you a replacement modem for free.

Hope this helps, please rate and leave a comment ^_^

Well, I understand that the modem is SS4100, which means ther are
5lights on it being, Power, Ethernet, DSL, Internet & Activity....
Note:The trouble shooting is done according to the Light Status on the modem.
1. No matter what the proble is, the first step is to Power Cycle the modem to eliminate the static on the modem(to switch it off and back on).
2. If the Power Light is anything other than a solid green, then the modem is fried(except the fact that the adapter is plugged and working).
3. If the Power is green and Ethernet is off, then check for the LAN cable at the back 
of the computer if its connected to the modem.(It turns green if connected properly)
4. If the DSL light is anything other than solid green, then call up the ISP tech's to ask why the intenet is not working.
(make sure the DSL cable is plugged firmly onto the back of the modem and the wall jack)
5. If the Power, Ethernet and the DSL is green and the internet is not, the open up the Modem page(type 192.168.0.1 in the address bar and enter for the modem page), and cross-check for the username and the password. Save the changes and your internet is working!!!
6.  The Activity light usually blinks green and it does't have much to do with the troubleshooting.
The above are the basic troubleshooting steps.
Hope it solves your problem......

Well, you are very correct with the activity light blinking and the increased blinking except the fact that modem will encounter a problem in future...
The 5 different lights on your modem namely Power, Ethernet, DSL, Internet and Activity have their own indications and explanations.
1. The Activity Light indicates the amount of activity that is takin place on the computer on the Internet though the activity might blink even when you are not browsing. This can be explained by stating that the computer constantly keep sending signals  about it being connected to the internet and any other acknowledgements..

So, you've got nothing worry about unless the Power or the Ethernet or the DSL or the Internet light Blinks....
Cause they are the resultants of a fried modem(check for the adapter), faulty LAN connections, interrupted Dsl line and the account verification failure indications respectively.....

If the internet light is not on that indicates a prob with your ISP, call them up and arrange a service call. I had a similar prob a few weeks ago and they had to replace the drop to the house from the telephone pole.

*if the DSL light on your modem is blinking..
TRY: using different filters// check physical connection
IF: not resolved call ISP for a trouble ticket for their line department
*if all the lights constantly blinks
DO: purchase new modem, maybe deffective already or check if modem still under warranty so provider can replace it

NOTE: plug 4100 modem directly to the back of the computer tower without the linksys router and check if light status still the same...
HOW: cable connected from back of modem shud be plug in directly to port at the back of PC tower.. completly remove linksys and turn linksys off..

can be a deffective modem.. they Bell.ca had replaced mine only 5 times..

Unfortunately it sounds like the modem may need to be replaced. I had the same issue. Even after doing a complete shutdown, resetting all the cables, restarting the modem and then the computer, it still did not work. After you get the modem replaced, I would suggest you get a spare, possibably from e-bay, so if this happens again, you will not be without DSL Service.

This modem is for AT&T broadband only and requires AT&T software to function.