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There are a lot of track with my PC, will not go into that, but I feel now is that my CPU fan never exceed 1300 rpm regardless. It is a BOXED E6400. The fan should be well able to actually have a lot more speed? Moreover, I find that I use over 50% of cpu, even if no program apparently uses more than 1-2%. CPU is defective, the fan is also defective? I overclock this PC for a couple years ago, has been much trouble for it. Overclock to 3 GHz (from 2.14 GHz).
If the clock as much with the stock cooler, so it is some chance that you've burned some bridges.
I would at least try to run ScanDisk and Defrag (or reinstalled your computer) to see if it could help. I had it this way on an old case. Everything was spread here and there on the disk, but it was an amazing improvement with Defrag.
Has never heard of fans fume at the way. Tried the fan control?
Your problem is hardly the defective CPU. Had it been defective so if you only had a black screen right now and posted about it instead of 50% CPU consumption. Your problem seems to be some driver conflicts, I assume. Easiest way is reinstall the OS and periodically check the drivers causing problems, ie the installer and a driver and check whether the CPU consumption hit 50%.
I've formatted my PC up to 5-6 times in the last six months, so I am convinced that the problem lies in hardware
As I said, CPU consumption does not occur in hardware, in which case you would have marked other problems also. Drivers, however, these may turn up wrong.
The reason that you do not "see" CPU consumption of programs in the Task manager is that you have not gone under the show menu and turned on "show kernel times" if you do this and look at the graph you'll see consumption, and those who operate on in the kernel is ... Right, drivers.
Format up to 10 times the last 12 months, with different hard drives, and with both XP and Vista, so that there is a driver problem, I'm not so sure.
Moreover, the other problems. Right now time is running fine, except that the fan noise completely insane when I play. Games are much worse than before. Before, there were other problems again, more diffuse. They seem more hard disk-related.
It simply that it is unstable. But that said, the only problem now is with the fan, the game can pick a part, and that the task manager shows unfounded over 50% use. The processes are software yes, but the software running on CPU. Wondering only if it can be CPU, for I want to just buy a new and better, first as last. To do it again sooner or later anyway.