In order to better assist you can you please let me know the exact processor model number that you have, as well as the motherboard brand / model?
I would suggest installing the latest BIOS version for your motherboard and also test your processor on a 2nd known working and compatible motherboard to see if it causes the same behavior, that way you can discard or confirm the processor as the device causing the issue.
I provide the full specs of my PC which I used AIDA64 program to scan. Here:
CPU type: QuadCore Intel Core 2 QUad Q6600, 2448 Mhz (9 x 272)
Motherboard name: Abit IP35 Pro XE
System memory: 4096 MB (DDR2-800 DDR2 SDRAM)
DIMM3: Team Group Team-Elite 800: 4096 MB DDR2-800 DDR2 SDRAM (5-5-5-15 @ 400 Mhz) (4-4-4-10 @ 266 Mhz)
DIMM1: Team Group Team-Elite 800: 4096 MB DDR2-800 DDR2 SDRAM (5-5-5-15 @ 400 Mhz) (4-4-4-10 @ 266 Mhz)
Bios type: Award(02/19/08)
Motherboard chipset: Intel Bearlake P35
Video adapter: NVIDIA GeForce GTX 285 (1024 MB)
Monitor: Generic PnP Monitor [NoDB]
3D accelerator: nVIDIA GeForce GTX 285
Audio adapter: Realtek ALC888 @ Intel 82801IB ICH9 - High Definition Audio Controller [A-2]
Storage controller: JMicron JMB36X Controller
Optical drive: SONY DVD RW DRU-880S ATA Device
IDE controller: Intel(R) ICH9 2 port Serial ATA Storage Controller 2 - 2926
IDE controller: Intel(R) ICH9 4 port Serial ATA Storage Controller 1 - 2920
Disk drive: ST500DM002-1BD142 ATA Device (500GB, 7200 RPM, SATA-III)
Disk drive: WDC WD3200BEVT-75ZCT2 ATA Device (320 GB, 5400 RPM, SATA-II)
DMI Bios Version: 6.00 PG
Please keep in mind that the processor does not have any movable parts, only the fan of the processor, so in this case I would suggest testing the fan of the processor on a different motherboard if possible, or at least try connecting the fan cable on a different port on the motherboard to see if it causes the same behavior.
Install the latest BIOS version for your motherboard if you have not done that yet.
Regarding the processor temperature dropping to dramatically, I would suggest testing the processor on another system to see if it has the same issue.
Perhaps you can test the processor on a friend’s motherboard or by taking the system to a local computer store to be tested.
Also contact the motherboard manufacturer for any suggesting on this matter.
If you notice that the issue follows either the processor or the fan/heatsink, then please proceed to contact the local Intel Customer Support center at: