May I ask you some questions before we start?
Earlier you had a nvidia GPU? The crash dumps upto 01.04.2013 indicates to nvidia GPU (a very known issue it was).
Code:
BugCheck C4, {91, 2, fffff80003604cc0, 0}
*** WARNING: Unable to verify timestamp for nvlddmkm.sys
*** ERROR: Module load completed but symbols could not be loaded for nvlddmkm.sys
Probably caused by : [URL="http://www.carrona.org/drivers/driver.php?id=nvlddmkm.sys"]nvlddmkm.sys[/URL] ( nvlddmkm+1b39c9 )
Followup: MachineOwner
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Probably due to those crashes you changed the GPU? The crashes of 24.04.2013 onwards are indicating to ATI GPU. This is also a very known issue, but a worst one. Let us discuss.
Code:
[URL="http://www.carrona.org/bsodindx.html#0xa0000001"]BugCheck A0000001[/URL], {5, 0, 0, 0}
Probably caused by : [URL="http://www.carrona.org/drivers/driver.php?id=atikmdag.sys"]atikmdag.sys [/URL]( atikmdag+2311c )
Followup: MachineOwner
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It is a bugcheck inherent with the ATI drivers. Universal. We dont know why it happens (AMD keeps it private). But we may try to troubleshoot.
Have you updated the display driver in between? If so, roll back to the earlier driver that worked good there.
Device Manager - Roll Back Driver
If not, uninstall the ATI/AMD display driver in Control Panel > Programs and features. Then follow
Drivers - Clean Left over Files after Uninstalling
When done, download an earlier version of display driver from
AMD Graphics Drivers & Software . Dont install CCC.
Does it work? If not, better you RMA the ATI GPU, as it is a new one.
On a serious side note, using two real time protection programs are harmful.
Code:
Start Menu\Programs\avast! Free Antivirus
Start Menu\Programs\McAfee Family Protection
Uninstall Avast using
Avast Uninstall Utility. Uninstall McAfee Using
McAfee Removal Tool. 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.
Let us know the results.