startup failure windows 7

My computer keeps crashing on startup. No blue screen or anything. Just hangs after the MS logo appears. Startup repair could not detect a problem. Any ideas?
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Joshua GrantomSenior Systems AdministratorCommented:
can you boot into safemode? try holding f8 on startup and selecting safe mode.
It's probably displaying a blue screen, but rebooting so fast that you don't see it.
Press F8 on startup and select the option to disable automatic reboot so you can see it.
It happened to me once and it was due to RAM.
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sdedolaCTOAuthor Commented:
Hi Joshua G - yes, tried that and still doesn't work.
Hi footech - the screen just hangs on the scintillating Microsoft logo. Doesn't reboot.
Hi RoyoR - don't think that's the issue, but I guess we'll see.

Thanks for the responses.
Have you tried last known good configuration?
sdedolaCTOAuthor Commented:
Yes, tried last know good config. Also tried command prompt and followed the directions to copy over the backup config manually. No help. Thanks.
Copy over the backup config?  With XP you could copy over registry hives from the System Volume Information, but last I checked you couldn't do that for Vista+, so was just wondering what you were referring to.  Also did you mean command prompt w/ Safe Mode, or from recovery environment/boot from DVD?

You might run a check of the hard drive (chkdsk /r).  Beyond that, I'm out of ideas for now.
Natty GregIn Theory (IT)Commented:
Check and make sure the rams are seated properly and it is a laptop make sure the harddisk is seated properly and if its a desktop make sure all cables are seated properly.

one more thing take out all the memory, put them in one by one then turn on the computer to see if its booted up. ( one stick of memory in then turn on pc, etc)
time for basic tests of ram and disk; i use the UBCD for this :
Hardware diagnostic CD    UBCD

go to the download page, scroll down to the mirror section, and  click on a mirror to start the download
Download the UBCD and make the cd   <<==on a WORKING PC, and boot the problem PC from it
Here 2 links, one to the general site, and a direct link to the download

since the downloaded file is an ISO file, eg ubcd527.iso - so you need to use an ISO burning tool
if you don't have that software, install cdburnerXP :

If you want also the Ram tested - run memtest86+ at least 1 full pass,  - you should have NO errors!
For disk Diagnostics run the disk diag for your disk brand (eg seagate diag for seagate drive)  from the HDD section -  long or advanced diag !  (runs at least for30 minutes)                        ultimate boot cd             download page

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Boot from the windows 7 installation media and see the options on there, i had this and found nothing and a factory reset worked for me and haven't had problems since, if you can factory reset it i would do it as it would avoid any other issues down the line
sdedola - how is it going?
sdedolaCTOAuthor Commented:
Hard drive was failing. I replaced it and solved the problem. The above solution would probably have uncovered the issue, but it was solved before I tried. Thanks.
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