Welcome & "Don't panic !" .... sounds more like a stuffed windoze install than anything else .....

Can you identify just what devices 'live' in your system ... so cpu, mem, video, we know what sound card & motherboard, and anything else you can identify... whether you bought that 'complete' or whether its an upgrade or a home build ...?

Most likely I'm gonna end up saying format & re-install or maybe an 'in-place' re-install might fix it ... but with all that rolling back of drivers etc your system might be terminally 'confus-ed' & require starting again ....

More info = more chance of fixing it ....