operating system not found

[tea]

hi, my pc says "operating system not found" in a blank screen,nothing else happening.
i don't have any recovery disk,all i have is Ultimate Boot CD v4.1.1.
first i ran Salvation scan  & repair and found 14 defects. repaired 13, one was left(couldn't repair.)then,i ran MHDD32,it said one AMNF error,couldn't repair.
next day,i scanned there was no error.
i tried a few more things on UBCD some of them even didn't work properly and keep saying drive A,T,Q.
it seems it doesn't recognise my hard drive C and D. i checked that BIOS recognise them.

my questions are;
1.how to make UBCD recognise my hard drives.
2.can i go to the recovery tool in my computer? now i reboot pc without CD,press F10 but i can't get into it after using UBCD.
3.what i can do with UBCD now?

any help would be greatly appreciated.

Sony Vaio F series
HDD:Fujitsu MHV2060BH

[patio]

I've never heard of Salvation scan...
If UBCD does not recognise the HDD's then you have serious issues...
Post back with more details....

[tea]

i just noticed that UBCD might have installed or something for Linux.
everytime i use UBCD to run something,i see "Linux" or kernel image etc..
when  i got UBCD i didn't even know what i was doing and just try many programs on it...
obviously,some stuff was installed.like my keyboard types a bit different.
i actually saw many times on the screen,asking me to install bunch of stuff but within a couple seconds the screen scrolls down and doing something.(can't read read cuz it scrolls fast)
i was gonna try "super grub disk"on UBCD,it seems to be able to boot hard drive,windows etc..but then,again,i see A drive as "Linux" which shouldn't be exist...

i am not familier with computer so i don't know what info & detail i should give...

before everything happens,pc was acting weird though.
it kept shutting down, antivirus kept blocking Internet Explorer.eventually i downloaded Safari and deleted IE.
i got many errors,antivirus deleted some system files so i tried to recover,it didn't work.
it stopped recovering at some point, computer restarted by itself.
and i got"error loading operating system".

then,i got  UBCD,played with it,turned into "operating system not found".
i hope i'm not making problems worse...

 
 

[patio]

I'm not so sure you should be fooling around with UBCD...