TriggerFinger

If you can still boot into Windows try using NHC or SpeedFan. They will give you an idea of the temps. At the moment you can check the vents and fan areas for any obstruction. Clean those areas using an air compressor or similar to get the dust out. Also when in use, make sure those areas do not get (accidentally) covered by anything (like when placed on the bed or a carpeted floor or on a table with table cloth).