Windows 7: Laptop overheating issue?

I have a 2 years old Lenovo Ideapad Y550 laptop. For some months, its fan is very noisy! Now I cannot play any 3D games because this laptop shuts down after 10 or 15 min when playing 3D games. Now I can only can do my work like browsing, word etc but no gaming at all! I remember when my computer shuts down the bottom of the laptop is very very hot. So my questions is 'Is it a overheating issue? If it is then how can I fix it?'

YES it is probably a heat issue. If the fan is load it is either from a bad bearing in the fan, or blocked passages.

If it is not under warranty and you feel comfotable doing this carefully use compressed air to blow out the intake and exhaust ducts on the laptop.

You could also buy a cooling pad (good ones drop the temp 10-20F)

To be sure it is a heat issue download CPUID (free)

Nice, I have an Ideapad Y560 myself. Yeah, absolutely should use a laptop cooler pad. I haven't managed yet to get it to force shutdown due to heat though, despite gaming in an un-airconditioned room in the tropics. Fan shouldn't be going full blast all the time though, something seems wrong here. You've checked the vents for dust and all that?

I managed to open the laptop and I found that dust particles is sticked with the fan. I am not a tech and cannot remove the heatsink myself. I think I had to take this laptop to the repair shop....