I have an HP pavillion a6115.uk. It will not boot windows vista.
After switching on and getting pre boot screen the following info is on screen in blue screen. The following info is on screen briefly.
stop coooo 221 unknown hard error.
\systemroot\system32\ntdll.dll.
Collecting data for crashdump.
initialising disc for crashdump.
beginning dump of physical memory.
physical to disc.
dumping memory.
Then there is a brief rapid countdown.
Then it goes back to the pre boot screen, then to error recovery screen.
Unfortunately I didn't get boot discs with PC
Please help!
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