I just put together a new PC and it's very slow to resume from sleep. I set the BIOS to use S3 sleep. I put the computer into sleep manually and all of the fans/lights go off in a 5 seconds or so. When I resume from sleep it takes about 20 seconds before Windows comes back on. By resume, I mean the LCD power light changes from amber to green and comes on. My USB mouse also has a light that takes about the same amount of time before it comes on. The PC fans all come on immediately. I have MSI 785G-E53 motherboard, with AMD Phenom II 560 (with all 2 hidden cores unlocked and overclocked from 3.3Ghz to 3.5Ghz), Windows 7 Home Premium 64 bit. 4GB (2x2) Mushkin RAM, 1TB Seagate SATA, 150MB Maxtor SATA, ASUS SATA DVD, LiteOn IDE CD, using on board video (Radeon HD4200), AVerDVD EZMaker WDM video capture PCI card, 500W PSU (don't recall brand offhand). So far, I've disabled the 2 extra cores and removed that overclocking. I also removed the video capture card and the IDE drive. Neither of those had any effect on the resume from standby time. I did go into control panel->performance and information tools->advanced tools->view performance details in the event log and I see quite a few "standby performance monitoring" errors and warnings. There's nothing in there that sticks out to me as pointing to a particular driver or piece of hardware, but I'm not really sure how to interpret the logs. One recent entry shows the resume duration at 20942ms, but there's really no data there that would help me isolate the issue. Please let me know if anyone has any ideas on what exactly to look for or to try at this point.