I have 6gb DDR3, more than 75% of the time my PC wont allow me to use all 6. When I do get all 6 running (from restarting PC over and over until it kicks in) it usually runs for about 30 mins until it crashes, without a blue-screen or any message. And then when I turn it back on, it sometimes keeps failing POST, beeping 4 times - indicating a RAM read/write failure.
When it's using 4gb however I rarely ever crash.I've checked the BIOS, it usually shows 4gb installed.
I've had this problem for more than a year and I thought I had fixed the problem a while back but I was wrong, and now it's doing it worst than ever. Also, i'm not computer savvy so bear with me.
(Thumbnails below are SIW, task manager and resource monitor.)