My linksys wireless g router will not power up,n yes I have plugged it in but no lights are comin up on the router.it was fine this mornin but turned the the plug of as I left the house come home turned plug back on but mornings happened.please help

just as a guess try unplugging power to both modem and router, then plug only modem in first until connection light stops blinking and goes solid. then plug in router.

Please make sure that Power, Internet and Wireless Light (or LAN light if trying to connect with Ethernet cable) is there on router if you are trying to connect it wireless .
And if only Power light is there only.Please try to power cycle the router ( turn off the router from power supply wait for a minute, plug the power supply back) and then again check the light status.
Even after this if same light status is there please try to reset the router ( there will be small pinhole button on the back side of router) just press it for 15 seconds and then release it.Wait for 2 mins and check the light status again.
It will fix your problem.

Please share the results.

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Indication of Router Lights:

• Power light blinks. If LAN or WAN cable is plugged in, their respective lights will flash on activity.
• Power light turns off for several seconds.
• All lights, except power light, turn on and then off.
• Power light blinks slowly, then faster, and WLAN light will turn on.
• Once Power light and WLAN light are on solid, the router is fully rebooted.

A working router should show solid green power light. upgrade the firmware of the router.
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Follow this procedure :

1. Turn off all components on your network - computer, router, modem, printers and any wifi laptops
2. With the ethernet cable connected only between the modem and the router TURN THE POWER TO THE ROUTER ON and let it boot up.
3. Turn on the modem and let it boot up to all lights on.
   
4. Connect / boot up any and all other components on your network.

Keep this order handy in case of a power outage. Best of successes!

Try resetting it.

Blinking power light on the Linksys routers indicate 2 things. 1st is firmware problem, 2nd is the worst one which is defective router. You can still revive it if you can reload the firmware. If not, it's a dead one and you need to purchase a new one. And man, your router is a very old one. You must switch to wireless G router, its 5 times faster than your wireless B and it only cost 30 or 40 bucks

yes

First thing i would try is power cycling your equipment. Unplug the router and the Modem-
Plug the modem in first and once all the lights come on- plug in your router- then restart your computer.

Hi
No problem if dmz is off ( only if you put one of your computer outside router firewall it will turn on though tghis is not recomended )
Wlan will be on only if you are connecting wirelessly .
Yes if power is not on spells trouble .
Go to your router support site update latest firmware it will end the problem .

Yes, this will work fine on any operating system Like Vista , all of the new Linksys router now like this one is already made to work with Vista operating system....

Hope that helps........