In the case that my computer would have issues with booting, what steps can I take to troubleshoot it?
Before we can start troubleshooting, you need to have an idea of how your computer boots.
How can I troubleshoot problems during the BIOS phase?
Essentially, you will want to work in a way which tries to exclude possible causes.
If your computer doesn't show a BIOS startup screen:
If your computer beeps or give you error codes very early:
If none of the specific solution works or your computer hangs, crashes or does odd things:
If your devices aren't detected properly:
Check the BIOS settings to see if is configured to detect the device,
If the above troubleshooting steps don't help, there is probably something broken...
How can I determine which essential hardware piece is broken?
Your computer solely needs a power supply, mainboard, cpu, graphics card and memory lath to work.
The power supply, memory and graphics card can be replaced to determine if they cause the problem, if they don't then it's either the CPU or Mainboard. You can troubleshoot this with an useful flowchart.
How can I troubleshoot problems during the Windows Kernel phase?
Bad device drivers, bad services and corruption (due to hardware, software or virus problems) are the most likely candidates for problems during this phase. Your best bet is to try to get into the Safe Mode to see if you can troubleshoot more there or do a repair attempt with the Windows CD.
How can I remedy corruption to system files?
Windows has a System File Checker built-in, when it is ran it will attempt to check and restore any System files that have been corrupted. In case there was a disk problem or if a virus has tempered with one of the System Files, it might be able to cure the corruption.
Start a command prompt as administrator (WINDOWS + R
How do I configure my computer to start up with less so the problem doesn't load?
Using MSConfig, you can do a diagnostic start-up to see if that works and enable some things every boot to troubleshoot if one of those things was the issue.
How can I troubleshoot problems around the Windows Logon phase?
My computer executes things with make the Logon phase unfeasible.
From the Safe Mode you can use Autoruns for Windows to disable things you don't need; pay attention though, you might want to check twice what you disable because it also lists essential things. Try not to disable things by Microsoft, disabling the rest shouldn't harm but you might see otherwise...
Sometimes a simple
You can Boot from a XP CD or Vista/7 DVD and run it at the command prompt.
XP, run chkdsk /r from the Recovery Console
In Vista/7, in the Recovery Environment command prompt run the command
The chkdsk log can be found in Event Viewer in XP, under Applications, as "Winlogon" events.
In Vista/7 it will be a recent event called chkdsk.
If the log shows any sectors being recovered, you should consider backing up your data immediately and replace the hard drive. On a othewwise healthy system, running