Cannot shutdow my computer cannot shutdow. i cannot solve this problem, i don't konw..............why?

unit might have faulty capacitors inside

That model uses three CRTs ( Picture Tubes) one red, one green and one blue. You can get the replacment CRTs from www.tvrepairworld.com

sorry ,i dont konw your problem

There is two places this will be. It will either be with your windows 7 disk. The other place will be located somewhere on the tower. There will be a Microsoft sticker and it will have the CD key on it.

a choke system has a spring inside it which keeps on or off the system like a switch .u can bind that with a wire or something to avoid autochoke during jumps or ride.try out it will work.

i don tno

Carrier make model no is 42SD6B the problwm is when the unit is running it run's for only 4 min then it's shuttdown give the error code 3 after 3 min. it's starting automitcally again it trip after 4min giving the error code 3.
So I just want to know what is this code stand for, what precaution should I take to solve this problem.

It is a registry error. Run a registry cleaner to fix the error. Firefox creates registry key it may be error in registry key. May be dll is missing so you can run registry cleaner reg in out to solve it.

Are you trying to set up router ?
You can set up your router manually, without the CD.
Make sure that your computer is able to go online directly through the modem.
If your computer is able to go online through the modem, that means the modem is working fine.
You will need to connect the computer to the router and the modem to the router.
open the set up page of the router and change the settings of the router according to the ISP.

Click Here for more information about the routers and network

That is typically a bad mag or a bad inverter. Sort of pricey either way. Hard to test the inverter without a good mag and running the unit and testing the amp draw. I repesented Panasonic and stopped doing warranty service for them because of that Inverter System. The inverters fail so often and are a bear to confidently diagnose. Sure there are tests at certain points you can do, but you really cannot difinitively test the mag without just applying the proper voltage to it and see if it fires. For the cost of new Microwaves today. I personally would RUN! There are tracer signals that must go from the main board throught the inverter system and back to the main board. If something interferes with that is will shut down or give you a code. So Ultimately it could be MAg, Inverter, or Main PCB, not worth it. Get a new unit with full warranties and be done with it. You will save money in the long run.Good Luck!!