Quad core only showing 2 cores

hugemetalfan · Oct 24, 2013

System specs:
Processor: Intel(R) Core(TM) 2 Quad CPU Q6600 @2.40 GHz
Mainboard: Benicia / manufacturer: Pegatron Corporation
RAM: 4 GB
Video card: AMD Radeon 7870 HD
DirectX: 11
OS: Windows Vista Home Premium Service pack 2 (64 bit)
Computer case: Hp pavillion

Hi!
My pc is showing only 2 cores out of 4. It has never happened before, i don't know what to do.

Everything is updated, i haven't had any problems whatsoever, until today, when I noticed some lag in a videogame (which always ran at constant 60 FPS)... how do I enable the cores? any help would be appreciated. Thanks a lot.

4745454b · Oct 24, 2013

Msconfig, boot tab, advanced, what does it show for "number of processors"? Make sure its unchecked/at four.

hugemetalfan · Oct 24, 2013

4745454b :

Already tried...it only shows 2 cores... I have also tried CPUz and it says i only have 2 cores, and i also checked set affinity in the task Manager and i can only choose between core 0 and core 1...

ThatGmodGuy · Oct 24, 2013

How long ago did you build it? You *could* have configured something, or downloaded a virus.

hugemetalfan · Oct 24, 2013

ThatGmodGuy :

It's a long story....

I bought this pc in 2007 (and it was a BEAST), but obviously it had an older video card (nvidia geforce 9600 GS).

It worked perfectly until it got many viruses (around 2010). I managed to get rid of them.

Then in 2011 the video card had problems: its fan didn't spin properly, so the pc locked up. The technician oiled the fan and the video card worked until 2012.

In 2012 I started having problems and so I formatted my pc. (i still had the old video card).

In 2013 (May) my videocard definitely DIED. so the technician replaced it with that beast! I had some compatibility problems, but I upgraded everything and my pc ran smoothly and without problems.

Yesterday, Malwarebytes noticed a trojan and quarantined it, so I deleted the virus, but for some strange reason, i wasn't able to open any videogame for like 30 minutes. Then this problem kinda fixed itself and everything was fine.

Today I booted my PC and something strange happened: Explorer.exe locked up and it didn't reopen, i couldn't open anything, i could only see the wallpaper, so I turned the PC off and voilà... only 2 cores showed up instead of 4.

ThatGmodGuy · Oct 24, 2013

hugemetalfan :

ThatGmodGuy :

It's a long story....

I bought this pc in 2007 (and it was a BEAST), but obviously it had an older video card (nvidia geforce 9600 GS).

It worked perfectly until it got many viruses (around 2010). I managed to get rid of them.

Then in 2011 the video card had problems: its fan didn't spin properly, so the pc locked up. The technician oiled the fan and the video card worked until 2012.

In 2012 I started having problems and so I formatted my pc. (i still had the old video card).

In 2013 (May) my videocard definitely DIED. so the technician replaced it with that beast! I had some compatibility problems, but I upgraded everything and my pc ran smoothly and without problems.

Yesterday, Malwarebytes noticed a trojan and quarantined it, so I deleted the virus, but for some strange reason, i wasn't able to open any videogame for like 30 minutes. Then this problem kinda fixed itself and everything was fine.

Today I booted my PC and something strange happened: Explorer.exe locked up and it didn't reopen, i couldn't open anything, i could only see the wallpaper, so I turned the PC off and voilà... only 2 cores showed up instead of 4.

That is most definitely a virus. 2 options I would recommend are either to buy this: http://www.fixmestick.com/
or go to a pc repair store/technician. They generally have a ton of those laying around, and will fix your computer with one.

hugemetalfan · Oct 24, 2013

That is most definitely a virus. 2 options I would recommend are either to buy this: http://www.fixmestick.com/
or go to a pc repair store/technician. They generally have a ton of those laying around, and will fix your computer with one.

Thanks for the help, much appreciated...but guess what? I rebooted my pc and voilà, 4 cores showed up without any "side effect". :bounce:

(although I'm afraid i'll get tons of catastrophic problems in the next days!)

ThatGmodGuy · Oct 24, 2013

hugemetalfan :

That's awesome! Glad to hear it is working now!

hugemetalfan · Oct 25, 2013

That's awesome! Glad to hear it is working now!

Thanks again, but I have just realized: two days ago (when I found the trojan) I couldn't open any videogame for 30 minutes, but then everything fixed itself.

But today as I tried to open Skyrim, it crashed, claiming a .dll was missing. This has NEVER happened before (and I have never modified anything ANYTHING in that folder).

Maybe it was this ".dll" which was the infected file (and since it got removed by the antivirus, i wasn't able to play the game today).

What do you think?

4745454b · Oct 25, 2013

Copy your save game just in case, delete and reinstall. Or see if you can find the missing .dll. Might be on the CD. Copy it back to where the game says its missing.

ThatGmodGuy · Oct 26, 2013

hugemetalfan :

Are you playing skyrim using steam? If so, steam will replace the corrupt files. Now, in regards to missing .dll's, I wouldnt worry unless it happens a lot, sometimes I will install a game, and a file will have disappeared, but steam will replace it for me

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