Problem with Air conditioner and Window

I recently bought a 1996 BMW 328is with 159,000 miles. Within 3-4 hrs of buying it the air conditioner stopped putting out cold air. I'm not sure if it needs freon, was overcharged with freon, is a computer issue, electronics issue, or anything like that. The air conditioner unit (digital unit) appears to work fine, it just stopped putting out cold air. It was fine when I test drove it and when I drove it home. Also, the next day after I bought the car the driver's side window wouldn't go up. Not sure if it's the regulator or what. When you hit the button to make it go up, you can hear it try for a second and the window moves about 1 or 2 milimeters (very small amount) but doesn't go up. But it doesn't grind and keep trying to make it go up. So I'm not sure if these 2 issues, the air conditioner and window, are related (electronics or computer) or if they are isolated incidents and just a coincidence that they happened around the same time (right after I bought the car). Any help you can give would be appreciated.