When do you determine that you need a new laptop? My laptop works fine for what we use it for, although some more memory wouldn't hurt. However, sometimes when we try to boot it, it won't respond. All the indicator lights are on, so I know it is getting power, but it just won't boot. This generally happens when we have completely drained the battery, then plug it in and try to boot. I know this is probably just user error, but it is still frustrating. Sometimes it will just lock up. I have run virus scans and found nothing. Anyway, I cannot afford to have a computer failure. We use this for a business and when we are on the road (running the business) it must work NOW. So...what are the signs that a laptop is about to die? This laptop is 3.5 years old and has been cared for, but used a LOT. In the past I have always replaced computers because I needed faster processors, they physically broke (dropped), etc. I may have actually just worn this one out? What do you guys think about Mac books? Is the transition from PC to MAC hard? I looked at one yesterday and it seems like it is a whole new world. Maybe easier...but certainly different.