Pc Crashes When Playing Any Game?

Computer games make my Pc crash. This happens about 10-15 minutes after I start any game.However, most games only crash when the window fits the whole screen and some games crash whenever it fits the whole screen AND whenever the game is resizableFor example, whenever I play Runescape in fullscreen, it crashes in about 10 minutes after I start the game. This doesn't happen whenever I have it in a resizable window. However the game, Minecraft, crashes in fullscreen AND in a resizable window.I already tried updating my drivers but according to my computer, my drivers are all updated to date.Here are my specs:Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7600) (7600.win7_gdr.110408-1633)Language: English (Regional Setting: English)System Manufacturer: Dell Inc.System Model: Inspiron 580 BIOS: Default System BIOSProcessor: Intel(R) Core(TM) i5 CPU 650 @ 3.20GHz (4 CPUs), ~3.2GHzMemory: 8192MB RAMAvailable OS Memory: 8120MB RAMPage File: 4620MB used, 11616MB availableWindows Dir: C:WindowsDirectX Version: DirectX 11DX Setup Parameters: Not foundUser DPI Setting: Using System DPISystem DPI Setting: 96 DPI (100 percent)DWM DPI Scaling: DisabledDxDiag Version: 6.01.7600.16385 32bit UnicodeSound Tab 1: No problems found.Input Tab: No problems found[CODE]