Trying to find operating manual or help using a Boss Micro BR 4

Your best bet is to read the manual. Here is a link to it on Roland's web site MICRO BR Manuals Support Roland

I know how to set it back to factory boss micro br.

Make sure the memory card you use is a MAXIMUM of 1 Gb as larger cards are not supported. Yes, the smaller cards are getting hard to find.

I believe this takes a MAXIMUM of a 1Gb card... Lot's of luck trying to find one of those these days!

You can try formatting it with the Micro BR but it probably won't do it.

Chances are you need a driver in your PC compatible with Vista. There are MANY compatibility problems with Vista and special devices such as the Micro Br.

Google is your friend... finds it instantly...

Download manual from here:

http://www.roland.com/products/en/_support/om.cfm?PRODUCT=M-BR

It’s necessary to bounce all of your tracks to a stereo pair of tracks before you can export your song to a computer as a WAV or MP3 file for burning onto a CD.
1. In normal mode, push EXIT and UTILITY until you see BOUNCE on the display.
Note: The upper right corner of the display shows the track you’re bouncing to. By default, “12V2”—Tracks 1 and 2, Virtual Track 2—is selected.
2. Press STOP and REWIND together to go back to the beginning of the song.
3. Press RECORD, and then press PLAY.
4.When the song’s finished playing, press STOP.
i read some stuff online and this should help.

Go to bossbr.net - Plenty of answers there! And yes, you have to master or export the tracks to .mp3 or .wav. These files will be located in the mp3 folder. Boss also makes a free .wav converter located on their website.

memory card has become fragmented, try reducing number of tracks you are playing back simultaniusly or optimize card.