I've attached a photo of the blue screen.
Maybe a memory issue? No new hardware or software has been installed.

Blue Screen.jpg
Description:	Blue Screen window
Filesize:	61.79 KB
Viewed:	24 Time(s)

Please click on image thumbnail to view.

You need to test your system RAM to see if that is the problem. Go here:
http://www.memtest.org
and download Memtest (either the floppy or CD versions).

If you get the CD version, that will be an .iso file. To burn an .iso file, you need to use something like Nero, and do an image burn. If you do a regular burn the CD won't work. Alternatively, you can grab a free .iso burner here:
http://isorecorder.alexfeinman.com/isorecorder.htm
Watch the versions, v1 is for doing the burn on an XP SP1 system, v2 for XP SP2, and v3 is for Vista. After you download the file, right click on it, and choose Install from the context menu. That will install the .iso burner. You may need to reboot. After that, navigate to the Memtest.iso file, right click on it and there will be a new context menu item called something like "Copy file to CD". Use that, and it will correctly burn the .iso file for you.

Run Memtest for at least 4 hours or more. If you start to get errors quickly, then the problem is very likely RAM. If you are running more than one stick of RAM, and you get errors, then run Memtest one stick at a time. Since it is unlikely that more than one stick will have failed, that should isolate the defective stick. No errors on memtest after an extended period of time pretty much takes the RAM out of consideration.

I will do this...thank you.