Windows 7: frequent BSOD on my computer due to ntoskrnl.exe+7cc40

HI my name is banby and i'm using this computer:

manufacturer: Dell
model :inspiron 570
processor : AMD ATHLON(TM) IIx2 250 processor 3.00 GHz
installed memory(RAM):4.00 GB (3.75 GB usable)
also, i'm using a windows 7 home premium sp1 64 bit.
well, since 2 months my computer is shutting down unexpectly and a blue screen appear.sometimes it happens 3 to 4 times a day. After researches in minidump repports,i found a that it was due to



*msahci.sys
*ntoskrnl.exe ...
now,i'm confused i don't know what to do to fix this issue
i also collected reports with sf diagnostic tool that i submitted with this post
thank you to help me

Welcome aboard, banby.

► A lot of problem creators are there

• Catalyst Control Center
• Norton AntiVirus ; replace by Microsoft Security Essentials - Free Antivirus for Windows
• PC Tools Registry Mechanic
• Roxio Creator Starter
• WinUtilities
• Wise Care 365

► Some Dell Junks are also present there. Remove them up too.

• Clean Up Factory Bloatware

► Free up the startup.

1. Click on the Start button
2. Type “msconfig (without quotes), click the resulting link. It will open the System Configuration window.
3. Select the “Startup” tab.
4. Deselect all items other than the antivirus.
5. Apply > OK
6. Accept the restart.

► Finally, Your crash dumps are not showing any finite probable cause. In such a situation, it is better to enable Driver Verifier to monitor the drivers.

Driver Verifier - Enable and Disable

Run Driver Verifier for 24 hours or the occurrence of the next crash, whichever is earlier.

Let us know the results, with the subsequent crash dumps, if any.

thank you so much let try and give you the feedback

well, i think my hard drive is dead now. when i start my computer a black page appear and says no boot device press F1 or
something like that and when i press nothing happen. but thank you again for trying to help me i ordered another hard drive to start over