Yesterday when I was playing a game, my pc froze. I couldn't shut down or restart the pc normally so I just shut it by clicking the power button but when I tried to start/boot the pc again, it just boot for one second and shut again and it happened again as long as if I don't shut the pc and so I did. Then I turned off the plug and turned on again and had to click the power button two times so my pc will power on, and then it said "DQS training failed on previous boot, reverted to slower DRAM speed. Press F1 to resume". When I tried to play something or open some heavy apps my pc just froze again. How do I fix this, please help me. Below is my pc specifications:
Processor AMD Sempron 145 Processor Manufacturer AMD Speed 2.8 GHz Number of Cores 1 CPU ID 078BFBFF00100F63 Family 10 Model 06 Stepping 3 Revision Video Card NVIDIA GeForce GT 520 Manufacturer NVIDIA Chipset GeForce GT 520 Dedicated Memory 1.0 GB Total Memory 2.2 GB Pixel Shader Version 5.0 Vertex Shader Version 5.0 Hardware T & L Yes Vendor ID 10DE Device ID 1040 Plug and Play ID VEN_10DE&DEV_1040&SUBSYS_2735107D&REV_A1 Driver Version 9.18.13.5012 Memory 4.1 GB Operating System Microsoft Windows 8 Professional Edition (build 9200), 64-bit Service Pack 0 Size 64 Bit Edition Professional Version 6.2.9200 Locale 0409 BIOS Default System BIOS Version American Megatrends Inc. 080015 Manufacturer American Megatrends Inc. Date 08/16/32 Display Maximum Resolution 1366 x 768 Sound Device 1 HD Webcam C270 Driver Version 13.80.853.0 Sound Device 2 High Definition Audio Device Driver Version 6.2.9200.16384 Sound Device 3 NVIDIA Virtual Audio Device (Wave Extensible) (WDM) Driver Version Sound Device 4 NVIDIA High Definition Audio Driver Version 1.3.33.0 DVD TSSTcorp CDDVDW SH-222BB SCSI CdRom Device CD TSSTcorp CDDVDW SH-222BB SCSI CdRom Device Drive 1 Size 931.5 GB Free 404.2 GB Drive 2 Size 45.2 GB Free 20.1 GB Drive 3 Size 29.3 GB Free 11.8 GB Browsers Internet Explorer 10.0.9200.16384 Chrome 0.0 Firefox 38.0.1 Safari Software Java 8.0.450 Flash 11.3.372.94 DirectX 11.0 .NET QuickTime Adobe PDF Reader