Power cord help.LCD's on a laptop. and afew other problems

I did not know what to title this so i hope i got the right info for y'all.

I have a HP Pavilion ZE4220 Laptop with no power cord and i also got a HP 19inch wide screen LCD monitor. Can i use the monitors cord to charge the laptop?

The laptop calls for input 19vdc 3.95A
while the LCD monitors power cord is output 12vdc 5.00A
i would think the LCD's should be powerful enough to change the batt with the laptop turned off right?

problem one. if its hooked to the power cord and you hit the power button it will turn on for a sec only flashing the I/O light and the power cord light then shuts off same thing happens when you remove the battery. But if you hit one of the 5 buttons at the top of the keyboard it turns on and all the lights flash and kick on for afew seconds then turns off but if you remove the battery and hit one of them the laptop will start up and go to windows then go right to stand-by mode

problem two when it powers up it showed me a problem the screen is way dark so i hooked it to a CRT monitor just to watch it power up to windows and while its in windows for what little time it is i can slide in the battery and it shuts it off within a sec but if i don't pop in the battery it just goes to stand by and stays there.. If theres any other info needed let me know and i will try to fill in the blanks.

 

If it were me, I wouldn't chance it. I'd be afraid with the different volts and amps, I'd fry my notebook. It just isn't worth that risk to me.
I'd either get one designed for your HP model
http://www.atbatt.com/product/5461.asp
or a targus universal notebook adapter
http://www.newegg.com/Product/Product.aspx?Item=N82E16834999852

But wait till someone that knows ranges of safe volts and amps weighs in with an opinion.