Yes and No. You'll probably find that your system will still appear to work OK when you boot up. Then it might start to wobble a bit. My experience is that a clean start is the only way to go, with a complete system reinstall - and if you're doing that, you might as well reformat and have a fresh start. Yes it's a real pain to do and you have to ensure that you've got everything before you start, but it really is the best way to realise the full benefit of your upgrade. Afterwards you won't regret it. Promise!
The chances are that you will have to format.Also depends on what operating system you are using at the moment.
What you could do after you have made backup's of all your important data. Before you take anything out of the machine, go to add and remove programmes. See if you can find the entries for your motherboard drivers and graphics card drivers. If so remove them.
Then go to device manager and remove the graphics card from display adapter tab.
You could then install the new M\B, graphics card and ram to see if it will boot. Have your new motherboard disk and windows disk handy.
I had this problemwhen I built my PC. I am running XP Pro now but at the time I was running ME. I did a back-up of all my data anyway before I started building my PC, in case something drastic went wrong! I suggest you do the same as myself, and if it comes to doing a complete re-install, the you have no problems.
There is a grain of truth in that starting again is not a problem but it does largely depend on when you started in the first place. It can take about 12 to 18 months to get your puter JUST how you want it and to start from scratch again IS a pain. Formatting is easy but is to be avoided if possible. Best thing is to take a Drive Image when you are happy with your setup -- at least every 6/8 weeks. No problem then and no more formatting and starting again. .. although some people seem to enjoy it.! I didn't.
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