Andre, I hear you are THE guy to talk to about slow bootup/start issues. If you can help out, I'd really appreciate it. Working on my parents' computer (Dell XPS 435MT X58/ICH10R w/ i7-920, 6GB RAM DDR3-1066, HDS721075KLA330, Win7 SP1 Home Premium x64) and I noticed starting from cold boot is DARN slow. (Attempting to talk them into an SSD upgrade to get them by until they can afford their next PC...) Shutdown's not a problem, and they don't normally hibernate or sleep that often... but cold boot is terrible! Many, many minutes. Attached trace hosted on mediafire. Is it supposed to be this huge?! http://www.mediafire.com/download/5kkoqclzujz8xm1/schade_trace.zip I attempted to run xperf on the trace but it gave me the following warning: xperf: warning: applying restriction of access for trace processing97993 Events were lost in this trace.Data may be unreliable. This is usually caused by insufficient disk bandwidth for ETW logging.Please try increasing the minimum and maximum number of buffers and/or the buffer size.Doubling these values would be a good first attempt.Please note, though, that this action increases the amount of memory reserved for ETW buffers, increasing memory pressure on your scenario.See "xperf -help start" for the associated command line options.FWIW, Dell has restricted their BIOS to only listing IDE/RAID as interface choices, and it is currently operating in IDE mode - but I hear if I load the RAID drivers and switch the BIOS to RAID, it will effectively activate AHCI for all SATA ports, even if running JBOD. I've installed the hotfixes you mentioned for Windows 7. Aside from switching to AHCI mode for the HDD, and running the BootVis-like xbootmgr optimization on the HDD, and eventually switching to a SSD... please let me know if you see further optimizations. (I've been suspicious the HDS721075KLA330 might be running at a reduced speed for a while, due to error/issues/age/miconfiguration?)