Thanks Happyrock, Here's the reports:
System Information (local)
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computer name: SELINA-PC
windows version: Windows 7 , 6.1, build: 7600
windows dir: C:\Windows
CPU: AuthenticAMD AMD Turion 64 X2 Mobile Technology TL-58 AMD586, level: 15
2 logical processors, active mask: 3
RAM: 2011217920 total
VM: 2147352576, free: 1996238848
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Crash Dump Analysis
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Crash dump directory: C:\Windows\Minidump
Crash dumps are enabled on your computer.
On Sat 21/07/2012 22:41:48 GMT your computer crashed
crash dump file: C:\Windows\Minidump\072112-68687-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x322493)
Bugcheck code: 0x124 (0x0, 0xFFFFFFFF85EC54DC, 0x0, 0x0)
Error: WHEA_UNCORRECTABLE_ERROR
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This bug check indicates that a fatal hardware error has occurred. This bug check uses the error data that is provided by the Windows Hardware Error Architecture (WHEA).
This is likely to be caused by a hardware problem problem. This problem might be caused by a thermal issue.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.
On Sat 14/07/2012 14:29:59 GMT your computer crashed
crash dump file: C:\Windows\Minidump\071412-70762-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x322493)
Bugcheck code: 0x124 (0x0, 0xFFFFFFFF85EC9024, 0x0, 0x0)
Error: WHEA_UNCORRECTABLE_ERROR
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This bug check indicates that a fatal hardware error has occurred. This bug check uses the error data that is provided by the Windows Hardware Error Architecture (WHEA).
This is likely to be caused by a hardware problem problem. This problem might be caused by a thermal issue.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.
On Mon 09/07/2012 18:29:33 GMT your computer crashed
crash dump file: C:\Windows\Minidump\070912-66721-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x322493)
Bugcheck code: 0x124 (0x0, 0xFFFFFFFF85EC18FC, 0x0, 0x0)
Error: WHEA_UNCORRECTABLE_ERROR
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This bug check indicates that a fatal hardware error has occurred. This bug check uses the error data that is provided by the Windows Hardware Error Architecture (WHEA).
This is likely to be caused by a hardware problem problem. This problem might be caused by a thermal issue.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.
On Mon 09/07/2012 12:59:42 GMT your computer crashed
crash dump file: C:\Windows\Minidump\070912-66409-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x322493)
Bugcheck code: 0x124 (0x0, 0xFFFFFFFF85EA3024, 0x0, 0x0)
Error: WHEA_UNCORRECTABLE_ERROR
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This bug check indicates that a fatal hardware error has occurred. This bug check uses the error data that is provided by the Windows Hardware Error Architecture (WHEA).
This is likely to be caused by a hardware problem problem. This problem might be caused by a thermal issue.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.
On Sun 08/07/2012 18:18:48 GMT your computer crashed
crash dump file: C:\Windows\Minidump\070812-65926-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x322493)
Bugcheck code: 0x124 (0x0, 0xFFFFFFFF85EB48FC, 0x0, 0x0)
Error: WHEA_UNCORRECTABLE_ERROR
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This bug check indicates that a fatal hardware error has occurred. This bug check uses the error data that is provided by the Windows Hardware Error Architecture (WHEA).
This is likely to be caused by a hardware problem problem. This problem might be caused by a thermal issue.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.
On Sat 07/07/2012 15:36:52 GMT your computer crashed
crash dump file: C:\Windows\Minidump\070712-65848-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x322493)
Bugcheck code: 0x124 (0x0, 0xFFFFFFFF85ED9024, 0x0, 0x0)
Error: WHEA_UNCORRECTABLE_ERROR
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This bug check indicates that a fatal hardware error has occurred. This bug check uses the error data that is provided by the Windows Hardware Error Architecture (WHEA).
This is likely to be caused by a hardware problem problem. This problem might be caused by a thermal issue.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.
On Thu 05/07/2012 20:59:13 GMT your computer crashed
crash dump file: C:\Windows\Minidump\070512-65785-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x322493)
Bugcheck code: 0x124 (0x0, 0xFFFFFFFF85EFC1D4, 0x0, 0x0)
Error: WHEA_UNCORRECTABLE_ERROR
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This bug check indicates that a fatal hardware error has occurred. This bug check uses the error data that is provided by the Windows Hardware Error Architecture (WHEA).
This is likely to be caused by a hardware problem problem. This problem might be caused by a thermal issue.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.
On Thu 05/07/2012 15:00:48 GMT your computer crashed
crash dump file: C:\Windows\Minidump\070512-63960-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x322493)
Bugcheck code: 0x124 (0x0, 0xFFFFFFFF85EE98FC, 0x0, 0x0)
Error: WHEA_UNCORRECTABLE_ERROR
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This bug check indicates that a fatal hardware error has occurred. This bug check uses the error data that is provided by the Windows Hardware Error Architecture (WHEA).
This is likely to be caused by a hardware problem problem. This problem might be caused by a thermal issue.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.
On Sun 01/07/2012 12:28:54 GMT your computer crashed
crash dump file: C:\Windows\Minidump\070112-64444-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x322493)
Bugcheck code: 0x124 (0x0, 0xFFFFFFFF85EC04DC, 0x0, 0x0)
Error: WHEA_UNCORRECTABLE_ERROR
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This bug check indicates that a fatal hardware error has occurred. This bug check uses the error data that is provided by the Windows Hardware Error Architecture (WHEA).
This is likely to be caused by a hardware problem problem. This problem might be caused by a thermal issue.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.
On Sat 26/05/2012 17:32:42 GMT your computer crashed
crash dump file: C:\Windows\Minidump\052612-70122-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x322493)
Bugcheck code: 0x124 (0x0, 0xFFFFFFFF85F0B8FC, 0x0, 0x0)
Error: WHEA_UNCORRECTABLE_ERROR
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This bug check indicates that a fatal hardware error has occurred. This bug check uses the error data that is provided by the Windows Hardware Error Architecture (WHEA).
This is likely to be caused by a hardware problem problem. This problem might be caused by a thermal issue.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.
On Sun 13/05/2012 16:28:10 GMT your computer crashed
crash dump file: C:\Windows\Minidump\051312-64397-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x322493)
Bugcheck code: 0x124 (0x0, 0xFFFFFFFF85F8C024, 0x0, 0x0)
Error: WHEA_UNCORRECTABLE_ERROR
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This bug check indicates that a fatal hardware error has occurred. This bug check uses the error data that is provided by the Windows Hardware Error Architecture (WHEA).
This is likely to be caused by a hardware problem problem. This problem might be caused by a thermal issue.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.
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Conclusion
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11 crash dumps have been found and analyzed. No offending third party drivers have been found. Consider configuring your system to produce a full memory dump for better analysis.
Read the topic general suggestions for troubleshooting system crashes for more information.
Note that it's not always possible to state with certainty whether a reported driver is actually responsible for crashing your system or that the root cause is in another module. Nonetheless it's suggested you look for updates for the products that these drivers belong to and regularly visit Windows update or enable automatic updates for Windows. In case a piece of malfunctioning hardware is causing trouble, a search with Google on the bug check errors together with the model name and brand of your computer may help you investigate this further.
Perhaps a dot or arctic 5 will sort this?