Win 7 x86 can't boot up, startup repair could not detect problem.

Golden said:

See post#10

I can't get into Windows !!!!!!

Why don't you have Restore Points? Do you know?

What was the infection found by WDO?

You'll need to confirm WDO has disinfected completely, try booting into Safe Mode to run Malwarebytes or another bootable AV from list. Knowing the type of infection can help our Security experts tell you what to run to combat it, as can a quick Google search which may point you to one of the bootable AV's which specialize in that infection.

Once it's confirmed clean, then run SFC from installer/Repair CD Command Line as Colin suggested. Then if necessary work through the rest of the steps which try everything possible before rescuiing your data and running HP Factory Recovery or Clean Reinstalling.

I'm currently running the Full Scan on Windows Defender.

I don't know why there were no restore points.

Don't know what WDO found, I left the quick scan running, when I returned it had re-booted & windows was ready with my username & it booted successfully.

I think that's the history being recounted.

So it's likely an infection, or the damage continuiing to be caused by remaining infection to System Files.

Be aware that with serious infection it is often easier in the long run to rescue your files (to quarantine for heavy scanning with Malwarebytes and your AV) then run Recovery or Reinstall.

But first try to learn the exact infection to post up in our Security forum while working through the steps to try to get it started to check performance stability.