My computer started shutting down approx 4 months ago whenever the room got hot..For the past 3 weeks it has started shutting down whether it is hot or cold...Does anyone have any fixes/ideas??

Shutting down is reboot? or freeze? Any errors? Blue Screen errors?

Change this setting:

rt. click My Computer then click Properties then Advanced then Startup and Recovery Settings then unclick Automatically restart

Also: look in your event viewer: rt. click My Computer then click Manage then Event Viewer.
Open the system as well as the application tabs & look for X errors. Click error line for details. Post back the source & event id especially of errors that seem to coincide with a crash.

Also you can get some heat sensor data with Everest:

http://www.lavalys.com/products/over...ng=en&pageid=1

Look under Computer | Sensor