Trouble booting led blinking 8 times (read sticky)

[mfish33]

I just got a new raspberry pi 2 and i am getting a repeated 8 flashes of the green led while trying to boot. I know this is a problem with bootcode.bin or my sdram. I'm using the newest version of NOOBS does anyone have any advice or do i have to RMA.

[RaTTuS]

read the boot sticky or just burn a new raspbian image

[mfish33]

have tried that already but still getting eight flashes

[mfish33]

Update: The pi starts the pattern of 8 green flashes immediately does this mean my sdram is defective?

[pluggy]

New SD card (small, low class, reputable vendor) and an entirely different power supply would be the next step. Power supply and SD card problems are VERY common, duff Pis aren't.

[mfish33]

I have tried several power suplies and i have tried a Samsung 32gb sd card and a san disk 32gb sd. Same results with anything i try.

[mfish33]

Does anyone have a solution. Was sick today and was trying all day.

[RaTTuS]

post links to
your PSU
your micro USB lead
your SDcard
your monitor
actual links to the ones you have
next
burn a new raspbian image to the micro SDcard
look and report what is shown on the device when you look at it from a windows [or mac] machine

insert micro sd card into RPi
plug in hdmi
plug in NIC lead
switch on monitor
power RPi

what happens ?
what lights ?
what does your router say - has it got a request from the RPi ?

where in the world are you ?
do you have any friends near by with an RPi ?

what is the voltage as measured from the test pads ?

[basilfx]

I have the same problem. Bought three RPi 2's and one of them does not work while the others do work with the exact same setup.

[mfish33]

I am using a galaxy s4 charger for the PSU.
I'm using both these sd's http://www.amazon.com/Samsung-MicroSDHC ... B00AWBHFRI
http://www.amazon.com/gp/aw/d/B00M55C0N ... SY200_QL40
The moniter I'm using is
http://m.newegg.com/Product/index?itemn ... 6824236313
I live in new jersey in the united states. I am a kid and I am the only one in this area who has even heard of the raspberry pi.
I will try doing what you are saying when I get home
By the way what is the Nic lead. Don't have anything to moniter voltage. How to see the requests from the router.

[pluggy]

NIC lead is Network Interface Controller lead aka an Ethernet lead. Plugs in next to the 4 USB ports.

Have you tried another Micro-USB lead ?. Its as least as important as the power supply. Thin cables, high voltage drop, Pi doesn't want to play. Short and fat is what you want. Measuring the voltage at the board is a good way of establishing if the power lead is any good.

I'd go for 8GB and class 4, its a lot less likely to be fake than a 32GB class 10, especially when its suspiciously cheap and from a Amazon "hanger on".

The monitor link doesn't work here, it just goes to the Newegg home page.

I've bought about 12 Pis in my time, all have worked out of the box ( I've killed one or two, but thats a different story ).

[mfish33]

What do you mean by fake?
I don't own any other micro sd's should I buy another.

[mahjongg]

The new PI has an external RAM now, so it also has a completely new RAM controller, its hard to guess if older firmware can handle that. So who knows what will happen if you are using pre-PI2 firmware on a PI2.

Many of the boot problems that seem to be specific to the PI2 are all due to trying to use incompatible software (operating system) versions not updated for the PI2, and disappear when you use the correct software.

That said, with thousands upon thousands made every day, its inevitable that a PI with bad memory slips through, even though every PI has been tested in the factory. So you could just send back the PI as defective, and hope the next one works better.

Fake SD-card are SD-card bought by clandestine (often Chinese) operators who change the firmware of the internal flash controller of the SD-card so that it rapports a much greater capacity than it really has, and then resold as having the much higher capacity, with a nice profit. 2GB card are being sold as 8GB and 16GB as 32GB. Often, when used in camera's for example, people who buy these cards only notice there is something wrong when photo's start to mysteriously disappear. But when used as a computer storage device strange things can happen immediately,

[mfish33]

It's not fake tested it my self. I bought the pi from new egg and they charge on returns (even if it's defective). So i want to avoid it.