|"the video adapter and its drivers' are working just fine."|
All modern mboards, their bioses, video adapters, and operating system have support for displaying basic VGA video built into them.
The specific video drivers you have loaded in the operating system on the hard drive for your video adapter are not used while booting the computer - they're not loaded until AFTER Windows starts to load normally. They're not used in Safe mode or Enable VGA mode.
"Did this happen after you loaded specific drivers for your video adapter ?
If yes, that's usually easy to fix, if by blank you mean black (no displayed image). "
If that DID happen after you loaded specific drivers for your video adapter , sometimes the specific video drivers can't recognize your monitor properly and sometimes in that case you get no video at all after Windows starts to load. That's easy to fix - you load Windows in Enable VGA mode and set your monitor type to Plug and Play Monitor, or better still, load the specfic drivers for your monitor model, and you then WILL have video after Windows starts to load when you load Windows normally. (You can't do that in Safe mode.)
You probably didn't need to load Windows from scratch.
It takes less than an hour to run it, but that's only the first step of many that you need to do.
E.g. You need to install the drivers/software for your mboard for devices that Setup did not find automatically, especially the main chipset drivers. You may need to install the drivers/software for other devices
Zillions of Windows Critical and Security updates need to be installed. Automatic Update will install most of those, but it can take a long time for it to finish doing that - they're only installed when you choose to Turn Off the computer. Using Windows Update many times on the Microsoft web site to do Express searches tl find and install them installs them in less time, but that takes at least several hours.
You may need to install SP3 updates - Automatic Update doesn't do that automatically.
You need to load a newer Internet Explorer and Flash Player version.
Etc., etc., etc. .
Okay, so your non wireless mouse and keyboard would not work in Safe mode.
In any case, you could have tried running a Repair installation of Windows procedure when you booted the computer from the Windows CD, rather than installing Windows from scratch - that does not delete your personal data you have added to the partition Windows is installed on.
It takes a little less time than running Setup from scratch, it can't fix all problems, but it's worth trying because if it's successful you won't need to do much to get Windows the way it was before and all your personal data is still there.
In any case, even if Windows will not work properly, you can boot the computer with something such as a bootabe Linux CD, and copy the personal data you don't want to lose to elsewhere, BEFORE you install Windows from scratch