Win7 Crash, can't recover! Please Help

My HP Pavilion p6214y desktop (Win7 Home 64) suddenly crashed/powered off on its own while I was in the middle of watching a video on the internet last monday. It tried to restart but couldn't.

I have tried several things to fix it but I can't.

Some of the stop errors I have seen are E4, A, and D1.
Startup repair can't fix the problem. I have run it over 20 times now.
In one of the error messages I have seen mentioned the ci.dll file.
I can't boot into safemode.
System Restore doesn't work/ fails after going through all the motions.
I can't run sfc /scannow from the repair tool command prompt because it says "There is a system repair pending which requires reboot to complete. Restart Windows and run sfc again."
I can't find the bootlog file ntbtlog.txt, I don't think it is getting far enough to write it.

Please help! I don't want to install windows from scratch.

Which switch should I use first?
Is there any risk of losing data on the hard drive by using Bootrec.exe?

I opened the command prompt from system recovery options and typed Bootrec.exe, and hit enter.
Then I typed:
bcdedit /export C:\BCD_Backup
c:
cd boot
attrib bcd -s -h -r
ren c:\boot\bcd bcd.old
bootrec /RebuildBcd
After restarting I didn't even get as far into the startup as before, because of some error about "Windows\system32\winload.exe Status 0xc0000428"
"Info: Windows cannot verify the digital signiture for this file."
It gave me the option of "enter" to start windows, "F8" for advanced options, and "ESC" to exit and restart.
Enter and/or F8 just kept looping me back to the same error.
So I put the repair disk in the DVD drive and restarted. I booted to the cd and it started doing its thing.
When It was looking for installations of windows it popped up an error window that I forget what it said but it forced me to restart again, so I did. This time I made it past that part and to the System recovery options/tools screen.
I ran startup repair and it could not fix it. The details had a signiture07 "missing OS loader". I had never had this "07" before so after I restarted I went back to the command prompt, deleted bcd and renamed the bcd.old back to bcd. When I restarted normally (without cd and without pressing F8) I no longer had the "winload" error and I was back to the original behavior/problem I posted before I tried "Bootrec". The details of a startup repair attempt show the signiture06 (I think it was 06) to be 1 now, which it was like 24 (I think this is the counter of how many times it has been run), but the signiture07 is back to its usuall error message of "corrupt file".

What should I do?