Do I need to reinstall Windows if I change MB, Processor and RAM? I currently have Windows 7 Ultimate
I am also going from a AMD CPU to a Intel, Does this mean I have to re-install ? I really don't want to as I downloaded my copy of windows from a ISO
Yes you will need to reinstall Windows, it is a good idea especially because you are going from AMD to Intel.
I think you can get away with it if you change your motherboard with the same brand and features. If its too much hassle for you maybe you can try uninstalling all your drivers before replacing your mobo but there's still no guarantee it will work right after that, you can also try to repair it if it doesn't boot up after changing mobos.
Changing from an AMD with a SiS chipset to an AMD X2 with a VIA chipset was difficult. I had to do a reload (over the top) of Windows XP.
Changing from AMD to Intel (or vice versa) is possible, but you first will have to remove ALL chipset related drivers from the system, or do a reload of Windows. Missing a driver can make your life a PAIN, so there is a bit of research that needs to be done before you do ANYTHING.
It is not necessary to FORMAT THE DRIVE to reinstall! It is easier, but with a bit of planning you can keep your system config.
I've had to become somewhat an expert in this as my clients are STUBBORN about everything! I can back up everything, but God forbid when a company's "IT pro" calls me because he can't figure out how to reload their Quickbooks install... *sigh*
You could try running your computer in safe mode before you upgrade and then running driver sweeper. Through that program, you'll be able to remove any and all drivers installed on your hard drive. Then when you get your new parts, just install all the drivers for them. I don't know if that will work or not, but it's probably your best bet.
I've never used that program... I guess I'm too old and like to do it myself!
·Changing from Intel to Intel: easy. Intel drivers tend to be happy if you overwrite them with new Intel drivers.
·Changing from AMD to AMD: easy. AMD drivers release kernel dependencies when hardware changes, so if it loads, the driver is right for the part.
·Changing from VIA to VIA: super easy. VIA bundles their chipset drivers together, so if your system is up to date often you don't have to do anything!
·Changing from SiS to SiS: depends. SiS writes drivers in much the same way my dog craps: sometimes it is nice, neat, and compact, and sometimes it is smeared all across the yard.
·Changing from Intel to anything else: full driver wipeout is REQUIRED! Intel drivers don't like to let go, and can make it difficult for newer drivers to be loaded. E.g. reload is often a must.
·Changing from AMD to anything else: if you wipe the drivers before the hardware change, chances are you'll be OK. If you can't, reinstall will be the most likely option.
·Changing from VIA to anything else: Uninstall VIA drivers using the supplied tool you got with the drivers. Good to go.
·Changing from SiS to anything else: Pray to God, make time to volunteer at the homeless shelter or soup kitchen, do what ever you can to boost your karma. Full system wipe and reinstall is the safest unless you have time (or somebody is paying for your time).
Agree 100% with what Nick wrote here. If you are going across chipsets within the same vendor, chances are good that windows will start and re-align the drivers for you (have a non-USB keyboard handy and pray you have a mouse/keyboard port! Chances are your USB ports won't work until you wade thru all the driver installs)).
If you go cross-vendor, chances are good you will likely get a bluescreen when you try to restart.
Finally make sure your AHCI/IDE driver protocol is the same as your old motherboard. I haven't tried switching via BIOS in Win 7 yet, but Win XP and Vista had serious (bsod) problems if you change this in the bios and the OS did not match regardless of whose drivers are installed.
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