Make sure that the system vents are free of any dust. Run the system diags by following the information below. Also, update the system bios from the link below.
is shipped with the Dell™ Enhanced Pre-boot System Assessment (ePSA) diagnostics. ePSA has been significantly improved with a view to streamline the entire diagnostic process. Enhancements include simultaneous testing on multiple devices, automatic execution that can be interrupted to allow interactive test selection, and an intuitive graphical user interface (GUI).
During the boot process, ePSA is accessed from a cold boot by pressing the power button on and repeatedly tapping <F12> until the BIOS Boot Menu appears on the screen. Use the Up and Down Arrow keys to select Diagnostics on the menu, and then press <Enter>.
There is no place to check the fans. Updating the system bios sometimes resolves fan issues. Click the link in the previous post to download and install the latest bios.