I got the error code 2000-0146 when i did the diagonostics test for harddrive failure. I originally did the test because when I turned on my laptop the message NTLDR is missing popped up and I couldn't start up the computer. Since then I have not been able to use my laptop. I know that I need to get a new hard drive from the error code so I was wondering is there a certain brand that works best and how do I go about installing it as well as reinstalling my back up disks is there a certain order that I have to install the software?? Unfortunately my warranty has expired so I could really use the help if any one knows what to do?