Hi,

I have a laptop that has started playing up. The graphics are temperamental (mosiacing) and when the boot sequence reaches the Windows (XP) log in screen, the computer crashes with a black, and sometimes blue screen.

I've taken the cover off the back and noticed the fan isn't spinning, so am I right to assume this maybe causing the graphics (onboard?) and the CPU to overheat?

If this is the problem, how difficult is it to diagnose whats causing the fan's malfunction and how hard is it to fix?

Thanks
Alex

I would definitely think there is a problem with no fan.

What is the exact make and model of the laptop?

The manual or manufacturer's web site might have an idea otherwise taking it to a certified repairer would be in order.

In general fans are very cheap and easy to replace but also very necessary!

The key statement above is "fans are cheap" - as in inexpensive but often in quality too, meaning it is common for them to fail. If you can see the fan clearly, then you should be able to remove it yourself. Just remove the battery and AC power first. Inspect the fan. Does it turn freely with your finger? Note the box type fans will have two arrows, one indicating rotation direction and the other flow direction. Install the replacement the same way. Replacement fans are usually easy to find for computers. Laptops are often another story as they frequently use proprietary parts - meaning you have to go through the laptop maker.

If you use your laptop as a desktop, you might consider one of these.