I've been having issues with Windows 7 Home Premium on a Lenovo laptop.

At first, it would not start up normally at all. I started it in Safe Mode, where I disabled all non-MS services and tried again to no avail. It then goes into Startup repair where it failed several times. I tried copying the original registry settings, still the same.

I resorted to booting with an Ubuntu DVD, where I ran the boot-repair, where it is supposed to correct the Windows boot. No luck.

I used Win7 DVD to start up from there, where I had the option to install or repair. I chose the repair, got into command prompt, ran chkdsk /i /r, where it found 3 unreadable segments, went through the 2nd step without issues, and the 3rd step completed with some errors (can't recall the exact errors).

When I restarted the machine, it went to straight to the Stratup Repair, indicating "Attempting repairs... Repairing dis errors. This might take over an hour to complete." It's been like this for nearly 15 hours.

When I try to cancel or close the Startup Repair window, I get a message "The current repair operation cannot be cancelled."

Should I let it run or force shut the machine? If force shut, how can I resolve this problem?

Thanks.