HELP! Can´t start windows after scanning.

Avast Free Antivirus / Premium Security
1

Hi, i really need help with my computer.

It runs on windows xp

I got the personal security virus on my computer
and scanned it with malwerebytes and cleaned it then
after reboot i scanned it with avast an it said i had over
3000 infected files and i started the clean up, halfway
trough it said that there isn´t enough memory to complete,
so i rebooted again and then i got the log in-log out problem
and i tried to copy the userinit.exe file to wsaupdater.exe but
it says that the file doesen´t exist.

Then i tried to connect by a networkwed computer with xp and
copied the clean userinit.exe from that computer to the otherone
and one copy named wsaupdater.exe and still the same problem.

I think avast quarantined all infected files and beacuse the computer
at least started before the avast scanning i think it has to do with that.

I know avast created a restore point on the computer
is there any way i can restore this whe i can´t log on?

I´ve tried start in safe mode, last known good configuration
and the recovery console but nothing i do seems to work.

Can anybody help me please!

2

Try again in safe mode by tapping F8 ON STARTING THE COMPUTER and go to your earliest restore point via select ADMINISTRATOR (no password to the black desktop navigate to sys restore etc & reboot.) to when the computer was running correctly. This virus has entrys in the REGISTRY
HKEY LOCAL MACHINE SOFTWARE MICROSOFT CURRENT VERSION RUN.
But if all your restore points are infected with this virus. You will need xp cd rom to repair windows if that fails?. IF REPAIR FAILS EITHER Del hard drive partition and format and start again! the best way to be certain to be clean.