Hello cmuamar.
Last day you have got six crashes, and every one is different from the other one. And they are not showing any cause of the crashes, even in a deeper search. So let us troubleshoot from the very basic.
Scan the system for possible virus infection.
And, which Antivirus do you use? I have failed to find one there. Use Microsoft Security Essentials as your antivirus with windows inbuilt firewall, and free MBAM as the on demand scanner.
Download, install and update those, and then run full system scans with both of them, one by one, too.
Stress test the Graphics Card using Furmark.
Video Card - Stress Test with Furmark
Test your RAM modules for possible errors.
How to Test and Diagnose RAM Issues with Memtest86+
Run memtest for at least 8 passes, preferably overnight.
Stress test the CPU.
Hardware - Stress Test With Prime95
The display driver is very old.
Code:
acc38000 ad16e000 atikmdag (deferred)
Image path: \SystemRoot\system32\DRIVERS\atikmdag.sys
Image name: atikmdag.sys
Timestamp: Thu Nov 19 00:42:40 2009 (4B044728)
CheckSum: 004ECC34
ImageSize: 00536000
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4
Update your ATI/AMD display driver.
You can get it from the link in our forum, Latest AMD Catalyst Video Driver for Windows 7, or you may go to AMD Graphics Driver and Software and opt for Automatically Detect and Install the appropriate driver for your card.
During installation, you may opt for advanced installation, and install the display driver only, not the Catalyst Control Center.
If you fail to find aa matching driver here, search in Dell's site.
Same comment goes for your network drivers, too.
Code:
Name [00000007] DW1525 (802.11n) WLAN PCIe Card
Driver c:\windows\system32\drivers\athr.sys (8.0.0.376, 1.19 MB (1,249,792 bytes), 2/4/2013 11:46 PM)
------------------------------------------------------------------------------------------------------
ad2c2000 ad3f6000 athr (deferred)
Image path: \SystemRoot\system32\DRIVERS\athr.sys
Image name: athr.sys
Timestamp: Wed Nov 24 05:40:43 2010 (4CEC5803)
CheckSum: 00139911
ImageSize: 00134000
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4
Search either in ATHEROS drivers for Microsoft Windows (Atheros?????), or in Dell's site.
And another one ....
Code:
Name [00000011] Broadcom NetLink (TM) Gigabit Ethernet
Driver c:\windows\system32\drivers\k57nd60x.sys (12.2.2.2, 267.54 KB (273,960 bytes), 8/6/2009 5:43 AM)
-----------------------------------------------------------------------------------------------------
ad27d000 ad2c2000 k57nd60x (deferred)
Image path: \SystemRoot\system32\DRIVERS\k57nd60x.sys
Image name: k57nd60x.sys
Timestamp: Thu Aug 06 17:14:50 2009 (4A7AC232)
CheckSum: 000524F4
ImageSize: 00045000
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4
Update it from Ethernet NIC Driver Downloads | Broadcom.
Run the Dell Diagnostics utility, to test your hardware, too.
Code:
BugCheck 1000008E, {c0000005, e2c77498, a4b182c0, 0}
Probably caused by : cng.sys ( cng!GatherRandomKey+272 )
Followup: MachineOwner
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BugCheck 18, {0, a06f9490, 2, 8b000003}
Probably caused by : ntkrnlmp.exe ( nt!ObfDereferenceObjectWithTag+4b )
Followup: MachineOwner
---------------------------------------------------------------------------------------------------
BugCheck 50, {ffffffdc, 0, ac20bb92, 0}
Could not read faulting driver name
Probably caused by : dxgmms1.sys ( dxgmms1!VIDMM_GLOBAL::UnmapVideoApertureSegmentInternal+ac )
Followup: MachineOwner
---------------------------------------------------------------------------------------------------
BugCheck C2, {7, 109b, 8b147500, 5f6388}
Probably caused by : dxgmms1.sys ( dxgmms1!operator delete+16 )
Followup: MachineOwner
---------------------------------------------------------------------------------------------------
BugCheck A, {3f87bd10, 2, 0, e2ca308b}
Probably caused by : ntkrnlmp.exe ( nt!ExpScanGeneralLookasideList+22 )
Followup: MachineOwner
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