I have a Acer Aspire 5745g-6323 with intel core i7 (4x ~1.73Ghz), 4 gb ram, and a nvidia geforce GT 420M 1gb dedicated graphic card. for the first year it worked fine, but after that even the oldest games like most wanted (2005), motogp 3 dont run, complete lag even on lowest settings. After checking GPU-Z and speed fan, the GPU temp. shows 234 degree Celsius. i tried installing the latest graphic driver, formatting and re installing the system, tried in Ubuntu, gave it to a mechanic, but no luck.
Please tell and suggest me any way to get it back its normal state.