Recently I have installed 2 ram modules to my Thinkcenter D10-6427. Now the RAMs are 6x2GB and 2x2GB. The system seems working week and slight gain in performance as well. After this upgrade, I just opened the task administrator and there noticed that only 4 CPU graphs like 1 Xeon working. There doesn’t look like change in performance at all. I checked with other apps like Lenovo ThinkVantage, PC Properties and BIOS but all of them show only 1 CPU.
So I again removed the RAM which I have recently added and then booted the system but the windows 7 couldn’t start at all. Also during the boot up SAS HDD not showed up. I could only see DVD and SSD. What kind of problem is this?
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