BSOD: driver irql not less or equal

By paradox347
Jan 13, 2009
  1. Hi,
    I got a new PC a week ago here are my specs:

    e8400 Core 2 Duo 3.0 Ghz
    Geforce 9600GT 512 DDR3
    4Gig Kingston DDR2 RAM
    320G HDD

    Yesterday, while playing a game i get this BSOD, DRIVER_IRQL_NOT_LESS_OR_EQUAL and it also mentions USBPORT.SYS, I did some googling and i found out that it is probably due to bad RAM or something . My event viewer shows an acpi error as well immediately followed by 3 NetBT errors. I have attached the jpeg of the event viewer and the minidump file as well.
    Thanks in advance

    P.S : I am running ^^ on a local 400W iBall PSU
  2. Route44

    Route44 TechSpot Ambassador Posts: 11,984   +72

    Your error is an 0xD1 DRIVER_IRQL_NOT_LESS_OR_EQUAL. These are caused by either faulty drivers or buggy software. In your case the driver USBPORT.SYS was cited as the cause.

    The thing is this is a Windows core driver and not a third party vendor. Since this is a new PC it has to be under warrenty. I'd contact Tech Support immediately and tell them the information that I've given you. You may need to have a Windows Repair (not difficult) or an update on your drivers.

    It is their job to resolve this.

    *** Please get back to us and let us know how it turns out.
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