Win 7 will boot until just before User icons show, then hangs.

My win 7 laptop seemed to hang at user logon, no mouse or keyboard response.
I did forced shutdown.
After that Windows detect some problem, want to do the recovery boot.
It goes to the point where I see windows screen, I never see a logon icon.

How long should I wait ?

I try to boot from CD, the same. it hangs and I never see the user icons.
I try to run the repair option from CD. It hangs at Starting setup.

How can I, 1) schedule a chkdsk ? or 2) force a reinstall of Windows 7?

I had tied t oboot in Safe Mode.

When the lap top gets to a later point in the process, there is momentary blue screen for core dump and then immediate rest and reboot.

Same as whem I try t oboot with out the repair option.

When I boot from Win 7 CD
For the repair tools I get the language selection but I never get to the screen where I get the repair options.

If I try to simply reformat, I get starting setup, Forever.

Just for clarification, are you able to get into System Recovery Options by clicking the F8 key at startup (Step 4)?

Troubleshooting Windows 7 Failure to Boot

I tried the options there, I cannot enter safe boot even from here. When just about to enter Windows, I get the instantaneous blue screen followed by reboot.

I cannot seem to get the point where I can to set chkdsk and restart windows.