ok, that's not the only thing you can do, and it's not the only thing you should do.
First of all, take everything out that you don't absolutely need, leave your video card, hard drive, memory, and cd-rom drive, that's about it. Take out your sound card, network card, other hard drives, dvd-rw drives, cd-rw drives, etc. Now, completely format the drive, start over. Install windows with only these bare components in it, if it installs right, then reboot a few times, make sure everything's cool, then install other addon cards one at a time. If you find a problem that arises, you know it's a conflict caused by a certain component, so we can fix that problem then. Also, make sure your power supply is adequate enough to handle this. If you have a 250 watt power supply, it may cause errors. Make sure your temps in bios are alright also, make sure they're not too hot and your heatsink is properly installed. Make sure you set your bios to the default settings, don't try to overclock or anything yet, you want to make sure your system is absolutely stable before you try that. If ya have any other questions, jus reply to this message and i'll help ya out
fiask0!