I took a family members old bloated (possibly virus infected) sony vaio laptop home, declaring confidently that I could make it like new (derp).
I ran CCleaner, Revo uninstaller and another uninstaller program multiple times, over confidently deleting things from the registry. I was fine for a while, getting faster, then revo uninstaller started being unable to create a restore point each time I ran it.
After one restart, it stopped working. On boot I get the Sony vaio logo, then a black screen with the blinking cursor (no blue screen, no error messages), then it reboots, and so on.
When I tap F8 the boot options do appear, but trying to boot into safe mode, disabling auto restart... none of them work, it just reboots straight away.
I ran sony diagnostics by tapping F10- all came back fine. I don't have the XP disk, so I made a recovery console CD.
First, chkdsk /p said there were errors, so I did chkdsk /r and another chkdsk /p which came back with no errors this time. Still no dice. Tried fixboot and fixmbr. Still nothing. Then tried do bootcfg /list which listed 2 entries , : which had no name, and : C:\Windows. Then I did bootcfg /rebuild with /fastdetect as load option, and again fixboot and fixmbr. Nothing changed! It keeps rebooting immediately following the Sony logo.
If it were my machine I would just backup all the files and do a fresh install, but as it is not mine I really want to avoid this. Did I do any of the above steps incorrectly? miss anything out? Any help would be massively appreciated!
I have at my disposal:
my laptop, a rw cd, usb sticks (although the laptop refuses to boot from usb even though external booting is enabled in BIOS). I did back up the registry a few times in CCleaner if that helps