1st generation iPad won't turn on, charge or show in iTunes

My brother has given me his old iPad which he has rarely used. It is a first generation iPad. It has been powered off for roughly two years. I tried to charge it with a wall charger but I just kept geetin the Apple logo for a few seconds. The screen then goes black for a few seconds, then the Apple logo comes up again. I watched it for about five minutes and the same thing just keeps happening, Apple logo comes on and back off and back on and off. I have charged it for several hours and tried all of the solutions of holding the power and home buttons. A prompt to connect to iTunes has come up during this but when I unplugged the charger the screen went black again and nothing happened when I plugged it into my laptop. The iPad was not recognised by Windows or iTunes. After hours of trying I eventually got it into recovery mode and tried to restore the iPad through iTunes. I followed all the steps and at the end an error 1602 came up. I have repeated this process twice and still get the 1602 error. I am close to pulling my hair out at this stage. Nothing seems to be working. I have searched the internet for quite some time trying to find a solutions. All I came across was one person on Yahoo! answers with the exact same problem and they were told to come here. Any help is most aprreciated to end this frustration!!! I just want to restore it to factory settings and get some use out of it.

Thanks,

Gary.