Why do I suddenly have an invalid IP address?

Question

I'm using an old POS PC running XP. I had this trouble when I set the wireless thing up initially but eventually got it working - though I cant remember how (Well either that or I can remember and it just isn't working this time - because as far as I'm aware I have tried what I did before)

I have been able to connect to the internet with no problems for like 3 months or so, now this evening I went onto my computer an the internet didn't work - and it's saying I have an invalid IP address.

Not sure what happened to my PC whilst I was away, I was watching videos on youtube, left one on pause whilst I ate dinner, then the internet just didn't work when I went back.

I've been googling for ages now and f*cking around with static IP addresses and running various resets in DOS and all of that stuff but nothing's making it go back to working.

Any ideas?

Laurence I · Accepted Answer

when a laptop hibernates, or decides to power off the wireless card
then it wakes again, the router will want to give it a new ip
this will usually result in the laptop having one value and the router sticking
with the original one(that it gave to that MAC address)

just turn both off and stop hibernating the pc.
it will be ok then

you could also....
turn off ALL power saving features and in the 
bios tell it NOT to save power on the wireless card

alternatively
configure the router to hold connected pc's IP's in a table
and to dish out the same IP to a given MAC address every day
that way if you do allow it to hibernate when it wakes it will get the same ip it always gets

Why do I suddenly have an invalid IP address?

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