Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I recently bought myself an upgrade package and some other upgrading components for my computer. My specs are now these:

  • Motherboard: Gigabyte GA-970A-D3P, Socket-AM3+
  • CPU: AMD FX-6300 6-Core Processor
  • RAM: Corsair Vengeance DDR3 1600MHz 8GB CL9
  • GPU: MSI GeForce GTX 660 2GB PhysX CUDA
  • SSD: Kingston HyperX 3K SSD 120GB 2.5"
  • HDD: I got a 300GB disk, a 1TB disk and a CD-ROM.
  • My PSU provides 550W.

My CPU is water-cooled by a Cool-it ECO cooler.

When my computer just randomly restarts, I don't get any bluescreen. The screen just turns black, like when you push the reboot button.

I also have a problem with my RAM. It says I have 8GB installed, but it also says I can only use 3,98GB. Which is weird since I'm running a 64-bit Windows 7.

I hope anyone can help me with my problems; it would be nice to have a 100% working computer.

share|improve this question
1  
Your power supply seems under powered for your hardware. Your memory problem should be researched as it also could cause this –  Ramhound Sep 23 '13 at 20:28
1  
You'll need to change how Windows handle critical system failures. Right-click My Computer > Properties > Advanced > Startup and Recovery settings. Un-tick Automatically restart. –  happy_soil Sep 23 '13 at 21:42
    
@OP: Is the RAM recognised in the BIOS? If not then try reseating it. If that does not work. Test with 1 DIMM at a time and/or test the DIMMs in another motherboard. (One of them might just be broken or make bad contact). –  Hennes Sep 23 '13 at 22:09
    

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.