Are you mixing two different kits of RAM?
List your full system specs including the P/N of your RAM.
"Are you mixing two different kits of RAM?"
Nope, same brand, Crucial, both ddr3, both 1600 Mhz, one is 4gb other is 8gb, I also have another 2gb which was already paired with the 4gb one, but does the same thing. I bought the desktop with already two different sizes of ram (4gb and 2gb). I recently bought the 8gb one, carefully checked to have the same attributes. The computer boots up, I can check the specs, it displays 11.4 gb Ram (because of integrated GPU), then after appr. 3 mins it crashes.
"List your full system specs including the P/N of your RAM."
Not sure how but i will try to include everything:
OS: Windows 8.1
Processor: AMD A8-6600K APU with Radeon(tm) HD Graphics (4 CPUs), ~3.9GHz
Memory: 8192MB RAM
Available OS Memory: 7604MB RAM
Page File: 4010MB used, 11273MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.03.9600.17415 64bit Unicode
Display Devices
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Card name: AMD Radeon HD 8570D
Manufacturer: Advanced Micro Devices, Inc.
Chip type: AMD Radeon Graphics Processor (0x990E)
DAC type: Internal DAC(400MHz)
Device Type: Full Device
Device Key:
Display Memory: 4077 MB
Dedicated Memory: 493 MB
Shared Memory: 3584 MB
Current Mode: 1920 x 1080 (32 bit) (60Hz)
Monitor Name: Generic PnP Monitor
Monitor Model: 22M35
Monitor Id: GSM5A31
Native Mode: 1920 x 1080(p) (60.000Hz)
Output Type: HD15
Crucial 8GB DDR3L-1600 UDIMM
CT102464BD160B
Crucial 4GB DDR3-1600MHz CT51264BA160BJ
Crucial 2GB 240-Pin DDR3 1600MHz CT25664BA160B