--- IPDT - rev 1.48.0.0 ---
--- Start Time: 01/09/2013 09:07:11---
--- Skipping Config ---
--- Reading CPU Manufacturer ---
Expected --> GenuineIntel
Detected --> GenuineIntel
Found --- Genuine Intel Processor ---
--- Temperature Test ---
Temperature Test Passed!!!
Temperature = 44 degrees C below maximum.
--- Reading Brand String ---
Detected Brand String:
Genuine Intel T2500 2.00GHz
Brand String Test Passed!!!
--- Reading CPU Frequency ---
Expected CPU Frequency is --> 2.00
Detected CPU Frequency is --> 2.0212
CPU Frequency Test Passed!!!
--- Reading FSB ---
Expected FSB : --> 667
Detected) FSB : --> 667
CPU FSB Test Passed!!!
--- Running Base Clock test ---
--- This CPU does not support base clock test ---
--- Running Floating Point test ---
Million Floating Points per Second, MFLOPS --> 14.4
Floating Point Test Pass ---
--- Running Prime Number Generation Test ---
Operation Per Second--> 110763
Prime Number Generation Test Pass ---
--- Reading Cache Size ---
- Detected L1 Data Cache Size --> 2 x 32
- Detected L1 Inst Cache Size --> 2 x 32
- Detected L2 Cache Size --> 2048
- Detected L3 Cache Size --> Not Detected.
Cache Size Test Passed!!!
--- Determining MMX - SSE capabilities ---
--- CPU FEATURES DETECTION FOR ---
--- MMX SSE ---
MMX - MMX Supported --> Yes
SSE - SSE Supported --> Yes
SSE2 - SSE2 Supported --> Yes
SSE3 - SSE3 Supported --> Yes
SSSE3 - SSSE3 Supported --> No
SSE4.1 - SSE4.1 Supported --> No
SSE4.2 - SSE4.2 Supported --> No
--- MMX SSE - capabilities check complete ---
MMX Test Result --- PASS
SSE Test Result --- PASS
SSE2 Test Result --- PASS
SSE3 Test Result --- PASS
SSSE3 Test Result --- Not Tested
SSE4.1 Test Result --- Not Tested
SSE4.2 Test Result --- Not Tested
MMX SSE Testing Passed !!
--- Determining AVX AES PCLMULQDQ capabilities ---
--- CPU FEATURES DETECTION FOR ---
--- AVX/AES/PCLMULQDQ ---
AVX - Advanced Vector Extensions Supported --> No
AVX OS Support - AVX Operating System Supported --> No ---> No Test Required
AES - Advanced Encryption Standard Supported --> No ---> No Test Required
PCLMULQDQ - Polys Carry-Less Multiply Supported --> No ---> No Test Required
--- AVX AES PCLMULQDQ capabilities check complete ---
AVX Compare Test Result --- Not Tested
AES Test Result --- Not Tested
PCLMULQDQ Test Result --- Not Tested
No AVX AES PCLMULQDQ Tests required
--- IMC NOT Supported on this Processor ---
..Platform Controller Hub Test not supported curent chipset..
..Skipping Platform Controller Hub Test..
Skipping Platform Controller Hub Test
..
..Query 5..
..
--- Querying for Intel(R) Integrated Graphics Device (IGD) ---
..Intel(R) Integrated Graphics Device not supported on this processor..
..Skipping Intel(R) Integrated Graphics Device Presence Test..
..
--- CPU Load ---
--- Load Level = 8
CPU Load Passed!!!
--- Temperature Test ---
Temperature Test Passed!!!
Temperature = 43 degrees C below maximum.
--- Test End Time: 01/09/2013 09:11:12---
one collegue of me had the same problem with a Dell d620.
The problem were the chipset driver.
Can you please update them with newer (vista) driver?