I am at my wit's end with this one. After successfully solving router/networking issues about a month ago, I have recently begun having stop errors. All of a sudden, about 3 days ago, my computer restarted. When I logged in again, it said it was a stop error. I thought it might have been a one-off, but since then it has done it repeatedly. It seems there is no particular trigger for it, but the error is the same every time. IRQL_NOT_LESS_OR_EQUAL Stop: 0x0000000A (0x005F0090,0x00000002,0x00000000,0x804E5E13) The parameters sometimes vary. I have since been browsing for causes and solutions. I have discovered causes from driver problems to faulty RAM to hardware incompatibility, yet none of these can be the cause. I have installed no new hardware or updated drivers since my networking issues a month or so ago (the errors started only three days ago). I have run a windows memory diagnostic (admittedly, only about 4 passes, but I will do more when the next restart comes) and nothing has shown out of place so far. I have cleaned all dust away from the case (admittedly, there was quite a bit of that), and I would clean inside too, but I don't want to invalidate my warranty. I am currently in the process of defragmenting to start a new pagefile. Anyone got any clues so far, or do I have to upload minidumps and other error reports?