computer can't get past loading operating system

[TMtitmouse]

i was on my computer surfing the internet when i got a BOSD and restarted my computer it kept happening when i was on the internet so i ran a chkdsk and mem test
to see what it could they oth came out clean and i was stumped. i left my computer alone but after a few days i turned it on and decided to try plaing a game and it worked
i played the game fora few hours and when i turned it off i was bombarded with messages from this program called win 7 home security that somehow turned off my windows defender '
i tried running a scan with my nod32 antivirus software but it came up clean. this program wouldnt let me go on the internet it kept saying i was unprotected and that it wld save my computer
i tried to find a way to uninstall it and i looked for the directory that it was in but i couldn't. so i decided to restart my computer and go into safe mode but when i restarted my comuputer
it stoped at loading operatig system and wont go past there.
im writing this on my dads computer.

 

[DeanP]

http://www.sevenforums.com/tutorials/681-startup-repair.html

 

[TMtitmouse]

i can't find my windows 7 disk any other advice? and thanks for the help

 

[SIW2]

Scan it with an av boot disc.

There are plenty of free ones.

I like the ESET online scan - but you can use any.

There is one you can download here, for example:

Dr.Web CureIt!; download free anti-virus! Cure viruses, Best free anti-virus scanner!

 

[TMtitmouse]

i tried to use the DR. web but when i put it in the cd rom drive it wouldn't boot i thought it migh have been a problem with my my computer so i tried a cd that i new had the ability to boot and it worked i have no idea why the DR. Web doesn't work. thanks for the advice though

 

[DeanP]

If you don't have a Win 7 Disc, use this tutorial: http://www.sevenforums.com/tutorials/2083-system-repair-disc-create.html

 

[SIW2]

Maybe the Dr.Web linux kernel won't boot on that machine.

Try another with a different linux kernel, like this: Avira AntiVir Rescue System - Download