<SOLVED> task manager detecting wrong CPU / Only 2 Cores detected

[Javier Ewe]

<SOLVED> I restarted my computer 3 more times and Windows detected everything correctly despite the RAM apparently needing to be of a higher speed

 

i upgraded my dell optiplex 755 SFF from a core 2 duo E6550 to a Core 2 Quad Q9300 and Windows is only detecting 2 cores and task manager is showing my old CPU. Help?

 

specs

Dell Optiplex 755 SFF mobo, case and psu

C2Q Q9300

GT 640 OEM

2GB DDR2

Windows 10 Pro 64 bit (upgraded from Windows 7)

Edited September 2, 2017 by Javier Ewe
SOLVED (JUST RESTART A COUPLE TIMES)

[tp95112]

Did you reinstall windows?

[Javier Ewe]

14 hours ago, tp95112 said:

Did you reinstall windows?

after i did the cpu upgrade, no. i don't think this should be necessary as i upgraded my c2d e7500 to a c2q q9400 on another build and it worked fine

[emosun]

does your optiplex actually support the q9300's FSB?

[tp95112]

Just now, Javier Ewe said:

after i did the cpu upgrade, no. i don't think this should be necessary as i upgraded my c2d e7500 to a c2q q9400 on another build and it worked fine

Its always good to reinstall windows especially something as big as that, I know Windows10 is alot better at stuff like this but its still recommended. You could also check if the cores are enabled in bios and on windows run msconfig

[Waqas409]

try updating bios too. 

[Javier Ewe]

6 hours ago, emosun said:

does your optiplex actually support the q9300's FSB?

im not sure, how can i check that? i only know that my Dell supports CPUs up to the C2Q Q9550

 

6 hours ago, Waqas409 said:

try updating bios too. 

bios is the latest revision already

[Herman Mcpootis]

did you try restarting the rig? happened to me before when i upgraded to a core 2 quad, worked fine after restarting.

[Javier Ewe]

6 hours ago, herman mcpootis said:

did you try restarting the rig? happened to me before when i upgraded to a core 2 quad, worked fine after restarting.

yes i restarted already

 

6 hours ago, tp95112 said:

Its always good to reinstall windows especially something as big as that, I know Windows10 is alot better at stuff like this but its still recommended. You could also check if the cores are enabled in bios and on windows run msconfig

yep, that screen shows 2 processors as well. i guess i'll check the bios when i get myself a usb keyboard else i'll reinstall windows

[emosun]

3 minutes ago, Javier Ewe said:

im not sure, how can i check that? i only know that my Dell supports CPUs up to the C2Q Q9550

whats the exact model of the motherboard.

according to the pdf on the 755 it only originally had 1066 fsb quad cores on it.

[Javier Ewe]

14 hours ago, emosun said:

whats the exact model of the motherboard.

according to the pdf on the 755 it only originally had 1066 fsb quad cores on it.

Dell Inc. 0DR845

Q35 chipset rev A2

[Herman Mcpootis]

Just now, Javier Ewe said:

yep, that screen shows 2 processors as well. i guess i'll check the bios when i get myself a usb keyboard else i'll reinstall windows

see if you can check the core count for the cpu in the bios, if it only says 2 cores then something's up with the motherboard or bios.

[Javier Ewe]

14 hours ago, herman mcpootis said:

see if you can check the core count for the cpu in the bios, if it only says 2 cores then something's up with the motherboard or bios.

ok, will do after i get my hands on a working usb keyboard (my usb keyboard isn't working)

[emosun]

1 minute ago, Javier Ewe said:

0DR845

From what I can can see in the pdf for the system the board only support the q6600 and q6700

https://www.dell.com/downloads/global/products/optix/en/opti_755_techspecs.pdf

[BubblyCharizard]

HT might be disabled in the BIOS

[Herman Mcpootis]

6 hours ago, Javier Ewe said:

ok, will do after i get my hands on a working usb keyboard (my usb keyboard isn't working)

http://www.overclockers.com/forums/showthread.php/624504-Quad-Core-Only-Seeing-2-Cores this might help.

Quote

This is what I had to do when I went from am E6600 to a Q6600. msconfig, then go to the boot tab then the advanced options tab.

 

 

6 hours ago, BubblyCharizard said:

HT might be disabled in the BIOS

core 2 quads don't have hyperthreading.

[Javier Ewe]

15 hours ago, emosun said:

From what I can can see in the pdf for the system the board only support the q6600 and q6700

https://www.dell.com/downloads/global/products/optix/en/opti_755_techspecs.pdf

ahh, i did some googling and i found out that 1333fsb cpus are supported but i have to get pc2-6400 ram. the one's in my system is pc2-3200 so i'll have to get that fixed.

link: http://en.community.dell.com/support-forums/desktop/f/3514/t/19423852

[TheLaserCucumber]

I had the same problem after I upgraded the Core2 Duo E8500 in my HTPC to a Q9650. After some time using it, I got a bluescreen. It rebooted and got everything right. No bluescreen appeared after that.

[BubblyCharizard]

1 minute ago, herman mcpootis said:

core 2 quads don't have hyperthreading.

I thought that one was DC with ht

 

the patrolmans ESB must be taking effect

[Herman Mcpootis]

6 hours ago, Javier Ewe said:

ahh, i did some googling and i found out that 1333fsb cpus are supported but i have to get pc2-6400 ram. the one's in my system is pc2-3200 so i'll have to get that fixed.

link: http://en.community.dell.com/support-forums/desktop/f/3514/t/19423852

you have 400mhz ddr2? 

 

6 hours ago, BubblyCharizard said:

I thought that one was DC with ht

 

the patrolmans ESB must be taking effect

http://ark.intel.com/products/33922/Intel-Core2-Quad-Processor-Q9300-6M-Cache-2_50-GHz-1333-MHz-FSB all core 2 quads were quad cores without hyperthreading, it's even in the name ffs.

[Javier Ewe]

15 hours ago, herman mcpootis said:

you have 400mhz ddr2? 

i checked again, i have pc2-5200u, so i guess ddr2-667

[Javier Ewe]

SOLVED! Thanks for the replies. I simply restarted 2 more times and everything is all good.