Make backups of all your data then just try installing the drive, Win7 is very good at seeing the new hardware and loading default drivers for all - Win 8 isn't too bad either, if it does load itself OK, then will want to update the latest drivers and BIOS from the mobo site, run a registry cleaner (Wise has a good free one), then run Win Update, might or might not have to reactivate - and contrary to popular (mis) beliefs, this also can be done quite often with OEM copies of Windows (MS will re-activate more often than not - and they have the final say)