I have a system I built for someone, here's the specs: Core i7 8GB DDR3 Gigabyte P55A-UD4P 2 X ATI 5770 Creative XFI Corsair 750 2 X Velociraptor 300gb RAID 1 (mirror)
Ok, I just did a fresh install of Win7 PRO x64. When I do a cold boot, as in the system is completely off, it sits at "Loading Operating System" for about 3-5 minutes then it starts booting and its real quick. If I reboot, it comes up right away. Any ideas on what can cause it to hang before booting?
BIOS have been updated, I pulled the video cards, sound card, DVD drives, and all but one stick of RAM, still does it. IDE + JMICRON are turned off in BIOS, boot is set to ONLY INTEL MIRROR array. I have no idea what to do, help? Ran chkdsk on Hard Drives, 0KB bad sectors.
More aboutslow start booting help
Run a memtest on each of the RAMs
I agree with ksampanna.. try with only one gig of ram. boot. .it should boot fast. Try each stick alone. Then, try 4 gig. I suspect the bios is testing the memory. Assuming all the memory is good, did you try a fast boot that skips memory testing?