My laptop has been running fine since I bought it a few months ago but all of a sudden it has started getting very loud...

First things first, check to make sure that your new wireless chip was correctly installed. If all pins and cables are correctly hooked up, then it may be a problem with your computer's drivers. The new wireless chip may not be able to communicate correctly with your computer due to out dated WLAN drivers. HP provides WLAN drivers on the HP 200-2d22DX support page found here. Make sure to install the correct driver for your wireless chip's manufacturer!

There are many reasons your computer may not be turning on. One possible solution is that your device may have a bad battery. A quick way to test this is to remove the battery and plug in your device's AC adaptor. If your computer turns on, your battery is most likely the root of the problem and will have to be replaced. If this does not solve the issue, there may be an underlying hardware problem that needs to be addressed. Visit HP's Support Page for more details.