When the computer is in sleep mode for many hours or overnight, I wake it up to find that that it has rebooted and logging in produces a dialogue box telling me it had an unexpected shutdown.  90% of the time when this happens, the "check for solution" produces nothing.  But occassionally it offers two possible solutions: Disable Receive Window Auto-tuning, and disable your ethernet network adaptor.  I have not tried either because it would make more sense if I got that recommendation very time.  Here are the error details.  They are always the same whether I get the recommendation or not. Problem signature:  Problem Event Name:                        BlueScreen  OS Version:                                          6.0.6002.2.2.0.256.1  Locale ID:                                             1033 Additional information about the problem:  BCCode:                                               9f  BCP1:                                                    0000000000000003  BCP2:                                                    FFFFFA8006547060  BCP3:                                                    FFFFFA8008C00050  BCP4:                                                    FFFFFA8007794C60  OS Version:                                          6_0_6002  Service Pack:                                       2_0  Product:                                               256_1 Files that help describe the problem:  C:\Windows\Minidump\Mini092609-01.dmp  C:\Users\Joe\AppData\Local\Temp\WER-39761815-0.sysdata.xml  C:\Users\Joe\AppData\Local\Temp\WERA697.tmp.version.txtThought I would get some advice from you experts before tinkering with the "maybe" solutions.  The computer arrived in August with Vista Ultimate 64 installed by Dell.  I have the Win 7 Ultimate upgrade coming, but want to be problem free before I upgrade.  Any help appreciated.  Hope I included all necessary info.  Thanks 


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