The official way - replace the whole top cover case with the keyboard and trackpad attached. Unofficial way - replace just the keyboard. Here's an example. Replacing keyboard on MacBook Pro 15" Mid 2010.
Here's an example of replacing just the keyboard on a MacBook Pro 15" Unibody (Mid 2010). It should be relatively similar for years 2009 and 2010. Replacing keyboard on MacBook Pro 15" Mid 2010 You'll have to disassemble the notebook as it shown in one of the guides on iFixit and access the keyboard. After that you carefully remove the backlight and unscrew the keyboard. I'm typing on a MacBook Pro with replaced keyboard. :)
Here are instructions for complete Dell Studio 1555 disassembly. http://www.insidemylaptop.com/how-to-disassemble-dell-studio-1555-laptop/ This instructions will show how to remove laptop keyboard, cooling fan, motherboard, DC jack and other main components.
1. Test your AC adapter with a voltmeter and figure out if this is bad adapter cable OR bad jack. If it's bad adapter, replace it with a new one. 2. If it's bad jack, you'll have to disassemble your HP G60 laptop and replace the jack. It's not soldered to the motherboard. You can simply unplug the damaged jack harness and plug in a new one. Take a look at the last picture in the guide I mentioned. 3. Alternatively, you can find laptop disassembly instructions in the official HP service manual. Find your HP laptop and download the manual. Go to parts replacement procedure. In the same manual you can find HP part number for DC jack harness. Same instructions apply to Compaq Presario CQ50/CQ60/CQ70 and HP G50/G60/G70 laptops.
1. If the drive stays closed for a while and later opens up by itself (in Windows) try the following. Go to the device manager, find the CD/DVD drive and uninstall it. Reboot the laptop and let it reinstall the drive. 2. If it doesn't help, probably this is mechanical damage. You'll have to replace the drive. You can find drive part number and replacement instructions in the official HP service manual. Here's another guide explaining how to disassemble HP Pavilion dv9000 notebook.
(1) Try fixing keys using this Laptop Key Repair Guide. (2) If the repair is not successful, you'll have to replace the whole keyboard. New keyboards available on eBay very cheap. (3) Keyboard replacement instructions published in Dell Service Manuals. Find your Dell laptop model and follow the instructions.
1. Try fixing keys using this Laptop Key Repair Guide. 2. If repair not successful, you'll have to replace the whole keyboard. New keyboards available on eBay very cheap. 3. Keyboard replacement instructions published in Dell Service Manuals. Find your Dell laptop model and follow the instructions.
You don't have to glue anything. There are retainers attached to the keyboard and the key has to be attached to the retainers. Do you still have all the key pieces? If yes, you can put it back on the laptop using this laptop key repair method.
You cannot fix cracked screen, it has to be replaced. Probably can find cheap on eBay. Screen removal instructions published in service manuals for Dell laptops at Laptop Manuals Hub Find your manual and follow the instructions.