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BSOD IRQL not less or equal ntoskrnl.exe

Ok, so bit of a long story. I just started working for a at home company. I had to install some work software. Shortly after ive been getting BSOD. Looking in the event viewer I had some invalid power states. This was caused by the vpn. Now ive seen some people suggest ram. My computer came with 2 of the 4 sticks bad, i replaced them with mismatched ram but they have been running fine for over 2 years. I also semi recently created some virtual ram. This has also been running fine for a while. The problems seemed to have started after installing the work software. So any one have any ideas where to start to see what the exact problem is, and how to fix it?
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  1. Best answer
    start with the simple stuff. run hitman pro and malware scan. make sure the software you installed was clean. run a ccleaner and a good defrag. make sure your mb chipset drivers and other drivers are all up to date.
    on the hardware side. run hdtune read your drive for any warnings and run memtest from a boot disk to see if one of the dimms went bad. for the bad power states it could be a sign that your power supply or motherboard has a bad cap and the output of the power supply not holding. use program like hardware monitor to watch your power supply outputs. with older pc too blow the dust out and make sure the fans on the cpu and power supply are working. if you still get the errors see if someone has a power supply you can use to see if the system still errors out.
  2. smorizio said:
    start with the simple stuff. run hitman pro and malware scan. make sure the software you installed was clean. run a ccleaner and a good defrag. make sure your mb chipset drivers and other drivers are all up to date.
    on the hardware side. run hdtune read your drive for any warnings and run memtest from a boot disk to see if one of the dimms went bad. for the bad power states it could be a sign that your power supply or motherboard has a bad cap and the output of the power supply not holding. use program like hardware monitor to watch your power supply outputs. with older pc too blow the dust out and make sure the fans on the cpu and power supply are working. if you still get the errors see if someone has a power supply you can use to see if the system still errors out.


    Thanks for the reply, I also did just update the motherboard and cpu to ati, from intell. I tried ccleaner and registry fix. Ill check the other stuff. thanks again. the power thing I think is just from the VPN and its requiremet for a sleep mode, something went wonky on that i think.
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