If you mean can you plug in an ac adaptor to charge the laptop while the laptop is running, yes, you can. There is no harm to the laptop whatsoever.
yes
No, this HP laptop should make little to no noise while running with no programs on.
No - if you're using a laptop at home, it's better to unplug the battery and run it from the mains adaptor. You should only run the laptop form the internal battery when there's no main supply present .
No. The machine will notice that it isn't getting all the required voltage and won't run.
Yes. Of course you must have .Net framework runtime installed to run any .net application, and your laptop is running one of the Windows operating system.
No you have to put it to hybernate i belive some of the laptops have that option like my Alienware laptop if you do that it will run the programs while its closed and monitor is off but will run the programs and download. Other than that if your laptop doesnt have that option no
Battery run-time on a laptop is difficult to determine. Actual battery running time depends upon the power demands made by the equipment. The use of the screen, the hard drive and other accessories results in an additional drain upon the battery, effectively reducing its running time. The total run-time of the laptop battery is also dependent upon the design of the equipment. Generally, a new Hi-Capacity laptop battery will run 30% to 50% longer than the old laptop battery did when it was new.
Most laptop computers are not designed for gaming. They have limited space to provide for extreme graphics application and the memory (RAM) might not be sufficient either. It might run on your laptop, but if its not a gaming laptop, you will have problems running most modern games.
On an Intel mac you can run parallels which is capable of running xp and vista.
3g connectivity in a laptop will allow you to get online from anywhere where there is cellular service. While you are limited in bandwidth, like you are on your phone, it is great for people who need to check email and such while on the run.
I have a Dell laptop running Vista and it does have bluetooth as standard. Run a search for "bluetooth" and it will come up.
if ur system has switchable graphics,make sure that the system is currently running on dedicated graphics.